Question

Solve the expression -8 + 4m^2 - 5m^2.

a) -m^2 - 8
b) -m^2 + 8
c) 9m^2 - 8
d) -9m^2 + 8

Answer 1

The expression is simplified by combining like terms, resulting in -m^2 - 8. Therefore, the correct answer is option (a).

Step-by-step explanation:

To solve the expression -8 + 4m^2 - 5m^2, you simply need to combine like terms. Here, 4m^2 and -5m^2 are like terms because they both contain the variable m raised to the second power.

When you combine 4m^2 and -5m^2, you are doing the operation 4m^2 - 5m^2, which equals -m^2. Hence, the simplified expression is -m^2 - 8.

The correct answer to the question is option (a) -m^2 - 8.