Question

) 7,8x + 9,1y2 – x + 1,9y2 – 8,7y²;​

Answer 1

Ответ:

6,8х+2,3у² точно 20 балл

Answer 2

It looks like you have an algebraic expression:

7.8x + 9.1y^2 - x + 1.9y^2 - 8.7y^2

You can simplify this expression by combining like terms. Like terms are those that have the same variables raised to the same powers. In this case, you have terms with "x" and terms with "y^2."

Let's simplify the expression:

Combine the "x" terms: 7.8x - x = 6.8x

Combine the "y^2" terms: 9.1y^2 + 1.9y^2 - 8.7y^2 = (9.1 + 1.9 - 8.7)y^2 = 2.3y^2

So, the simplified expression is:

6.8x + 2.3y^2