Question

Помогите решить !!!!!!!

Answer 1

1)

1) b³-8c³=(b-2c)(b²+2cb+4c²)

2) 49x²y-y³=y(49x²-y²)=y(7x-y)(7x+y)

3)7a²+14a+7=7(a²+2a+1)=7(a+1)²

4) 5ab-15b-5a+15=5b(a-3)-5(a+3)=(5b-5)(a-3)=5(b-1)(a-3)

5) a⁴-1=(a²)²-(1²)²=(a²-1)(a²+1)

Answer 2

1)
1) b³-8c³=(b-2c)(b²+2cb+4c²)
2) 49x²y-y³=y(49x²-y²)=y(7x-y)(7x+y)
3)7a²+14a+7=7(a²+2a+1)=7(a+1)²
4) 5ab-15b-5a+15=5b(a-3)-5(a+3)=(5b-5)(a-3)=5(b-1)(a-3)
5) a⁴-1=(a²)²-(1²)²=(a²-1)(a²+1)

Answer 3

1)
1) b³-8c³=(b-2c)(b²+2cb+4c²)
2) 49x²y-y³=y(49x²-y²)=y(7x-y)(7x+y)
3)7a²+14a+7=7(a²+2a+1)=7(a+1)²
4) 5ab-15b-5a+15=5b(a-3)-5(a+3)=(5b-5)(a-3)=5(b-1)(a-3)
5) a⁴-1=(a²)²-(1²)²=(a²-1)(a²+1)

Answer 4

спс