Question

d. $(6x^2 + 3x - 4) - (2x^2 - x + 7)$

Explanation:

Step1: Distribute the negative sign

$(6x^2 + 3x - 4) - 2x^2 + x - 7$

Step2: Combine like $x^2$ terms

$6x^2 - 2x^2 = 4x^2$

Step3: Combine like $x$ terms

$3x + x = 4x$

Step4: Combine constant terms

$-4 - 7 = -11$

Step5: Combine all results

$4x^2 + 4x - 11$

Answer:

$4x^2 + 4x - 11$