Question

(2b^2-8b+7)+(5b^2+b-2)

Answer 1

Ответ:

Раскрывает скобки и приводим подобные

2b^2-8b+7+5b^2+b-2 = 7b^2-7b+5

Подобные больше привести нельзя и это ответ

Answer 2

To simplify the expression (2b^2 - 8b + 7) + (5b^2 + b - 2), you need to combine like terms by adding or subtracting the coefficients of the same degree (b^2, b, and the constants):

(2b^2 - 8b + 7) + (5b^2 + b - 2)

Combine like terms for b^2: 2b^2 + 5b^2 = 7b^2

Combine like terms for b: -8b + b = -7b

Combine like terms for constants: 7 - 2 = 5

Now, put it all together:

7b^2 - 7b + 5

So, the simplified expression is 7b^2 - 7b + 5.