Помогите!!!!!! 1.(X-5)² 2.(6a+7b)² 3.(m+3)(m-3) 4.(8m-4n)(8m-4n)

Question

Помогите!!!!!!
1.(X-5)²
2.(6a+7b)²
3.(m+3)(m-3)
4.(8m-4n)(8m-4n)

Answer 1

1. x^2-10x+25
2. 36a^2+84ab+49b^2
3. m^2-9
4. 64m^2-64mn+16n^2