Question

分解因式.1.6x^2-13x+6=02.2x^2+3x+1=03.15x^2+x-2=04.3a^2-7a-6=05.

Answer 1

1.6x^2-13x+6=(2x-3)(3x-2)=0,所以x=3/2或x=2/3

2.2x^2+3x+1=(2x+1)(x+1)=0,所以x=-1/2或x=-1

3.15x^2+x-2=(3x-1)(5x+2)=0,所以x=1/3或x=-2/5

4.3a^2-7a-6=(3a+2)(a-3)=0,所以a=-2/3或a=3

5.6x^2-11x+3=(3x-1)(2x-3)=0,所以x=1/3或x=3/2

6.2y^2+y-6=(2y-3)(y+2)=0,所以y=3/2或y=-2

7.4n^2+4n-15=(2n-3)(2n+5)=0,所以n=3/2或n=-5/2

8.5x^2-8x-13=(5x-13)(x+1)=0,所以x=13/5或x=-1