Question

Помогите пожалуйста, упростите выражения. 1) (а+2) (а+2)-а (а-5)= 2) (b+8) (b-6) - (b-7) (b+7)=

Answer 1

1) (а+2) (а+2)-а (а-5)= а^2+2а+2а+4-а^2+5а= 4+9а;///// 2) (b+8) (b-6) - (b-7) (b+7)= b^2-6b+8b-(b^2+7b-7b-49)= b^2-6b+8b-b^2+49=2b+49

Answer 2

Simplifying Expressions

To simplify the given expressions, let's start by solving each expression separately.

1. Simplify the expression (a + 2) + (a + 2) - a + (a - 5):

First, combine like terms: (a + 2) + (a + 2) - a + (a - 5) = 3a - 1 2. Simplify the expression (b + 8) + (b - 6) - (b - 7) + (b + 7):

Again, combine like terms: (b + 8) + (b - 6) - (b - 7) + (b + 7) = 4b + 16 So, the simplified expressions are: 1. 3a - 1 2. 4b + 16