Question

1. $(8x^{2}+6)-(2x^{2}+3)$

Explanation:

Step1: Distribute the negative sign

$8x^2 + 6 - 2x^2 - 3$

Step2: Combine like $x^2$ terms

$(8x^2 - 2x^2) + 6 - 3 = 6x^2 + 6 - 3$

Step3: Combine constant terms

$6x^2 + (6 - 3) = 6x^2 + 3$

Answer:

$6x^2 + 3$