Question

(√7-3)(2+√7)=
(3√2-6)(√2+5)=
(3x²1) (2+1)=
(x+y) (x+y)=
(4√3+2(√2-1)=
(a+2) (a+3)=
(2-a) (3+b)=
(3x-2)(√3+1)=
(x-1)·7=
√3 (√5-1)=
3x (2+3y)=
(2+x²)(3-x)=

Answer 1

2√7+7-6-3√7=1-√7
12+15√2-6√2-30= 9√2-18
(x+y)²=x²+2xy+y²
4√6-4√3+2√2-2
a²+5a+6