x乘以+x
@岑佳5053：(x+1)乘以(x+2)+1/4因式分解 -
侯菊19475481417…… ( x + 1 )( x + 2 ) + 1/4 = (1/4)[ ( 2x + 2 )( 2x + 4 ) + 1 ] = (1/4)[ ( 2x + 3 - 1 )( 2x + 3 + 1 ) + 1 ] = (1/4)[ ( 2x + 3 )” - 1” + 1” ] = (1/4)( 2x + 3 )” 或者 = x” + 2x + x + 2 + 1/4 = x” + 3x + 2 + 1/4 = (1/4)[ 4x” + 12x + 8 + 1 ] = (1/4)[ (2x)” + 3(4x) + 9 ] = (1/4)( 2x + 3 )”
@岑佳5053：(x+1)乘(x+2)乘(x+3)乘(x+4)这道题到底怎么进行简便运算啊? -
侯菊19475481417…… ^^(复x+1)(x+2)(制x+3)知(x+4)+1-1 =(x+1)(x+4)(x+2)(x+3)+1-1 =(x^道2+5x+4)(x^2+5x+6)+1-1 =(x^2+5x+4)(x^2+5x+4+2)+1-1 =(x^2+5x+4)[(x^2+5x+4)+2]+1-1 =(x^2+5x+4)^2+2(x^2+5x+4)+1-1 =(x^2+5x+4+1)^2-1 =(x^2+5x+5)^2-1
@岑佳5053：x乘x的平方+x的平方 - 作业帮
侯菊19475481417…… [答案] 答: x乘x的平方+x的平方 =x*x²+x² =(x+1)x²
@岑佳5053：请问一道数学题呀?x乘以(x+1)乘以(x+2)乘以(x+3)怎么做呀? - 作业帮
侯菊19475481417…… [答案] 看看下面我给你的解答吧:设第二个孩子的年龄为x. x(x-1)(x+1)(x+2)=11880 等价于:[x(x+1)][(x-1)(x+2)] 等价于:(x^2+x)(x^2+x-2)=1180 此时,令x^2+x=a,则有: 等价于:a(a-2)=11880 等价于:a^2-2a-11880=0 等价于:(a-110)(a+108)...
@岑佳5053：x乘(1+x)的平房=182 -
侯菊19475481417…… x(1+x)^2=182x=1/3 (-2 + (2458 - 3 根号[671307])^(1/3) + (2458 + 3 根号[671307])^(1/3))
@岑佳5053：X乘以(X+1)乘以(X+2)=336 X是多少呢
侯菊19475481417…… 336=6*7*8 所以x=6
@岑佳5053：x乘(x+1)乘(x+2)乘(x+3)等于360X等于多少 - 作业帮
侯菊19475481417…… [答案] x乘(x+1)乘(x+2)乘(x+3)等于360 x(x+1)(x+2)(x+3)=360 x(x+3)(x+1)(x+2)=360 (x²+3x)(x²+3x+2)=360 令y=x²+3x+1 (y-1)(y+1)=360 y²-1=360 y²=361 y=±√361=±19 x²+3x+1=±19 1) x²+3x+1=19 x²+3x-18=0 (x+6)(x-3)=0 x1=-6 x2=3 2) x²...
@岑佳5053：在线等 10(5 - x)+x乘以10x+(5 - x)=736 求过程和答案 -
侯菊19475481417…… [10(5-x)+x][10x+(5-x)]=736 (50-9x)(9x+5)=736 x^2-5x+6=0 x=2或x=3
@岑佳5053：X乘以(x+1)乘以(X+2)乘以(X+3)=43680 - 作业帮
侯菊19475481417…… [答案] x(x+1)(x+2)(x+3)=43680(x+1)(x+2)x(x+3)-43680=0(x^2+3x+2)(x^2+3x)-43680=0(x^2+3x)+2(x^2+3x)-43680=0(x^2+3x+210)(x^2+3x-208)=0因为x^2+3x+210>0所以x^2+3x-208=0(x+16)(x-13)=0x=-16或x=13
@岑佳5053：解方程x乘以(x+3)乘以(x+6)=1620 求x的解一步一步算 解释每一步为什么这么算 再说一下像这样的方程该怎样解?越清楚财富越高! - 作业帮
侯菊19475481417…… [答案] x(x+3)(x+6)=1620 x(x+3)(x+6)-1620=0 (x^2+3x)(x+6)-1620=0 x^3+6x^2+3x^2+18x-1620=0 x^3+9x^2+18x-1620=0 x^3-9x^2+18x^2+18x-1620=0 x^3-9x^2+18x^2-162x+180x-1620=0 x^2(x-9)+18x(x-9)+180(x-9)=0 (x^2+18x+180)(x-9)=0 (x^2+18x+81+99)(x-...
侯菊19475481417…… ( x + 1 )( x + 2 ) + 1/4 = (1/4)[ ( 2x + 2 )( 2x + 4 ) + 1 ] = (1/4)[ ( 2x + 3 - 1 )( 2x + 3 + 1 ) + 1 ] = (1/4)[ ( 2x + 3 )” - 1” + 1” ] = (1/4)( 2x + 3 )” 或者 = x” + 2x + x + 2 + 1/4 = x” + 3x + 2 + 1/4 = (1/4)[ 4x” + 12x + 8 + 1 ] = (1/4)[ (2x)” + 3(4x) + 9 ] = (1/4)( 2x + 3 )”
@岑佳5053：(x+1)乘(x+2)乘(x+3)乘(x+4)这道题到底怎么进行简便运算啊? -
侯菊19475481417…… ^^(复x+1)(x+2)(制x+3)知(x+4)+1-1 =(x+1)(x+4)(x+2)(x+3)+1-1 =(x^道2+5x+4)(x^2+5x+6)+1-1 =(x^2+5x+4)(x^2+5x+4+2)+1-1 =(x^2+5x+4)[(x^2+5x+4)+2]+1-1 =(x^2+5x+4)^2+2(x^2+5x+4)+1-1 =(x^2+5x+4+1)^2-1 =(x^2+5x+5)^2-1
@岑佳5053：x乘x的平方+x的平方 - 作业帮
侯菊19475481417…… [答案] 答: x乘x的平方+x的平方 =x*x²+x² =(x+1)x²
@岑佳5053：请问一道数学题呀?x乘以(x+1)乘以(x+2)乘以(x+3)怎么做呀? - 作业帮
侯菊19475481417…… [答案] 看看下面我给你的解答吧:设第二个孩子的年龄为x. x(x-1)(x+1)(x+2)=11880 等价于:[x(x+1)][(x-1)(x+2)] 等价于:(x^2+x)(x^2+x-2)=1180 此时,令x^2+x=a,则有: 等价于:a(a-2)=11880 等价于:a^2-2a-11880=0 等价于:(a-110)(a+108)...
@岑佳5053：x乘(1+x)的平房=182 -
侯菊19475481417…… x(1+x)^2=182x=1/3 (-2 + (2458 - 3 根号[671307])^(1/3) + (2458 + 3 根号[671307])^(1/3))
@岑佳5053：X乘以(X+1)乘以(X+2)=336 X是多少呢
侯菊19475481417…… 336=6*7*8 所以x=6
@岑佳5053：x乘(x+1)乘(x+2)乘(x+3)等于360X等于多少 - 作业帮
侯菊19475481417…… [答案] x乘(x+1)乘(x+2)乘(x+3)等于360 x(x+1)(x+2)(x+3)=360 x(x+3)(x+1)(x+2)=360 (x²+3x)(x²+3x+2)=360 令y=x²+3x+1 (y-1)(y+1)=360 y²-1=360 y²=361 y=±√361=±19 x²+3x+1=±19 1) x²+3x+1=19 x²+3x-18=0 (x+6)(x-3)=0 x1=-6 x2=3 2) x²...
@岑佳5053：在线等 10(5 - x)+x乘以10x+(5 - x)=736 求过程和答案 -
侯菊19475481417…… [10(5-x)+x][10x+(5-x)]=736 (50-9x)(9x+5)=736 x^2-5x+6=0 x=2或x=3
@岑佳5053：X乘以(x+1)乘以(X+2)乘以(X+3)=43680 - 作业帮
侯菊19475481417…… [答案] x(x+1)(x+2)(x+3)=43680(x+1)(x+2)x(x+3)-43680=0(x^2+3x+2)(x^2+3x)-43680=0(x^2+3x)+2(x^2+3x)-43680=0(x^2+3x+210)(x^2+3x-208)=0因为x^2+3x+210>0所以x^2+3x-208=0(x+16)(x-13)=0x=-16或x=13
@岑佳5053：解方程x乘以(x+3)乘以(x+6)=1620 求x的解一步一步算 解释每一步为什么这么算 再说一下像这样的方程该怎样解?越清楚财富越高! - 作业帮
侯菊19475481417…… [答案] x(x+3)(x+6)=1620 x(x+3)(x+6)-1620=0 (x^2+3x)(x+6)-1620=0 x^3+6x^2+3x^2+18x-1620=0 x^3+9x^2+18x-1620=0 x^3-9x^2+18x^2+18x-1620=0 x^3-9x^2+18x^2-162x+180x-1620=0 x^2(x-9)+18x(x-9)+180(x-9)=0 (x^2+18x+180)(x-9)=0 (x^2+18x+81+99)(x-...
