Question

数学达人请进,求因式分解,1.-2X平方+5X+1 2.abx平方-(ac-b平方)x-bc

Answer 1

1.-2x²+5X+12=(x+4)(3-2x)2abx²-(ac-b²)x-bc=(ax+b)(bx-c)3.x²-4ax+8ab-4b²=(x-2b)(x-4a+2b)4.已知a+b-2=0,则(a²-b²)²-8(a²-b²)= (a+b)²(a-b)²-8(a+b)...