(-2) (x² + x - 8). Multiply each term of the 2nd parenthesis by (-2) (-2)* (x²) = -2x² (-2)*(x) =-2x (-2)* (-8) =+16 Result: -2x²-2x+15

(-2) (x^2+x-8) =-2x^2-2x+16. Hope it help!