AoPS

MATHEMATICS · Single correct · AoPS · Mathematics · x Marks the Spot · x Marks the Spot

Problem

Simplify:

2.5x^2 - 0.7x + 4 - 1.3x^2 + 2.2x - 6

(a)

3.8x^2 + 1.5x - 2

(b)

1.2x^2 - 1.5x - 2

(c)

1.2x^2 + 1.5x - 2

(d)

1.2x^2 + 1.5x + 2