Simplifying
4(x2 + 2) + -3

Reorder the terms:
4(2 + x2) + -3
(2 * 4 + x2 * 4) + -3
(8 + 4x2) + -3

Reorder the terms:
8 + -3 + 4x2

Combine like terms: 8 + -3 = 5
5 + 4x2