Answer
$2x^2+15x-6$
Work Step by Step
We write an expression to express this subtraction problem: $(3x^2+8x-4)-(x^2-7x+2)$
We use the commutative, associative, and distributive properties to group like terms: $(3-1)x^2+(8-(-7))x+(-4-(2))$
We combine the like terms within each set of parentheses: $2x^2+15x+(-6)=2x^2+15x-6$
