Question

Combine the like terms to simplify the expression. 4a2 + 7b2 + 5b2 – 2a

Answer 1

For this case we must simplify the following expression:

$4a ^ 2 + 7b ^ 2 + 5b ^ 2-2a$

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

$4a ^ 2 + (7b ^ 2 + 5b ^ 2) -2a =\\4a ^ 2 + 12b ^ 2-2a$

Thus, the correct option is option B.

Answer:

Option B