Question

simplify the following expression
$12x^2 - 2 + 5x - 8x^2 - 7$

Explanation:

Step1: Combine like terms for \(x^2\) terms

We have \(12x^2\) and \(-8x^2\). Combining them: \(12x^2 - 8x^2=(12 - 8)x^2 = 4x^2\)

Step2: Combine constant terms

We have \(-2\) and \(-7\). Combining them: \(-2-7=-9\)

Step3: Write the simplified expression

The term with \(x\) is \(5x\) (no other like terms for \(x\)). So putting it all together: \(4x^2+5x - 9\)

Answer:

\(4x^2 + 5x - 9\)