Question

1. What is the value of the expression (-7)(3) - (5) (-3)

2. Simplify (x^2 +6) - (3x^2 - 2x -5)

Answer 1

1. (-7)(3)-(5)(-3) = -21 - (-15) = -21+15 = -6

2. (x^2+6) - (3x^2-2x-5)=x^2+6-3x^2-2x-5
= =2x^2 - 2x + 1