Помогите (1+5y)^2-5×(1+5y)×y=10 Срочно

Question

Помогите
(1+5y)^2-5×(1+5y)×y=10
Срочно

Answer 1

1 + 10у + 25у^2 - 5y - 25y^2 = 10
1 + 5y = 10
5y = 10 - 1
5y = 9
 y = 1,8

Answer 2

(1+5y)²-5(1+5y)y=10
(1+5y)(1+5y-5y)=10
1+5y=10
5y=9
y=9/5
y=1,8

ili

(1+5y)²-5(1+5y)y=10
1+10y+25y²-5y-25y²=10
1+5y=10
5y=9
y=1,8