Question

(5+6y)(5-6y)-3y(2.6-1,2y)​

Answer 1

Ответ:

=25-30y+30y-36y²-7.8y+3.6y²=25-32.4y²-7.8y

Answer 2

This looks like a polynomial expression. Let's simplify it step by step:

$(5+6y)(5-6y) - 3y(2.6-1.2y)$

First, expand the expressions within the parentheses:

$(25 - 30y + 30y - 36y^2) - (7.8y - 3y^2)$

Now, combine like terms:

$25 - 36y^2 - 7.8y + 3y^2$

Combine the $y^2$ terms:

$25 - 33.8y - 33y^2$

So, $(5+6y)(5-6y) - 3y(2.6-1.2y)$ simplifies to $25 - 33.8y - 33y^2$.