Question

Помогите пожалуйста!!!!

Answer 1

1. 5a³-125ab² = 5a*(a²-25b²) = 5a*(a-5b)(a+5b)
2. a²-b²-5a+5b = (a+b)(a-b)-5(a-b) = (a-b)(a+b-5)
3. a²-2ab+b²-ac+bc = (a-b)²-c*(a-b) = (a-b)(a-b-c)
4. 25a²+70ab+49b² = (5a)²+2*5a*7b+(7b)² = (5a+7b)²
5. a²-2ab+b²-3a+3b = (a-b)²-3(a-b) = (a-b)(a-b-3)
6. 63ab³-7a²b = 7ab*(9b²-a²) = 7ab*(3b-a)(3b+a)
7. (b-c)(b+c)-b(b+c) = (b+c)(b-c-b) = (b+c)*(-c)
8. m²+6mn+9n²-m-3n = (m+3n)²-(m+3n) = (m+3n)(m+3n-1)
9. a²-9b²+a-3b = (a-3b)(a+3b)+(a-3b) = (a-3b)(a+3b+1)
10. 4a³-ab² = a(4a²-b²) = a(2a-b)(2a+b)