(x^2-4x-12)(x^2-4x+3)+56
3个回答
(x^2-4x-12)(x^2-4x+3)+56
=(x^2-4x﹚²-9(x^2-4x﹚+20
=(x^2-4x-4﹚(x^2-4x-5﹚
=(x²-4x-4﹚﹙x+1﹚﹙x-5﹚
相关问题
x-1/4X=5/12X-3/8X=3/56X+3/2X=15
因式分解:1、(x²-4x-12)(x²-4x+3)+56
设要截取x厘米 (4/2)^2*3.14*x=3*(2/2)^2*3.14*16 12.56x=150.72 x=12
(x的平方-4x-12)(x的平方-4x+3)+56
x÷0.56=1.5,3.4+4x=15.52,x-6.2+3.4=12,解方程
3x(7-2x)+5x(2x-1)=4x(x-3)+56
x-12x-4=0 x-2x=2 x-4x-12=0 (x+1)-4=0 (3x+2)
4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119
10x乘3+(x+2-4)-(10x+x+2)=56
1)4x2-12x-1=0 (2)3x2+2x-3=0 (3)5x2-4x-12=0 (4)3x(x+2)=5(x+2)