化简:1)(x-1)(x+5)＝2)(a+2)(a+8)＝3)(x-a)(x+b)=4)(3x-5)(x+6)=5)(x-7)(2x+8)=6)(x-8)²＝7)(3x-2)²＝8)(x-5分之2)²＝9)(x-3)²=10)(3x+5)²=11)(x-4分之3)²=

Question

化简:
1)(x-1)(x+5)＝
2)(a+2)(a+8)＝
3)(x-a)(x+b)=
4)(3x-5)(x+6)=
5)(x-7)(2x+8)=
6)(x-8)²＝
7)(3x-2)²＝
8)(x-5分之2)²＝
9)(x-3)²=
10)(3x+5)²=
11)(x-4分之3)²=

Answer 1

1.x^2+4x-5
2.a^2+10a+16
3.x^2-ax+bx-ab
4.3x^2+13x-30
5.2x^2-6x-56
6.x^2-16x+64
7.9x^2-12x+4
8.x^2-4/5x+4/25
9.x^2-6x+9
10.9x^2+30x+25
11.x^2-8/3x+16/9