#1 Answer: 6x^2-3x+1 Steps: collect like terms & subtract the #’s 6x^2 +4x+3-7x-2 → 6x^2 -3x+3-2 → 6x^2-3x+1
#2 Answer: -2x^2-15x+6 Steps: Remove unnecessary parentheses. & when there’s a negative in front of an expression in parentheses, change the sign of each term in the expression. 3x^2 -5x+10-5x^2 -10x-4 Collect like terms & subtract the #’s -2x^2 -15x+10-4 → -2x^2 -15x+6
#3 Answer: 8x^2 +12x Steps: Multiply each term in the parentheses by 2x. 2x•4x+2x•6 Calculate the product. 8x^2 +2x•6 → 8x^2 +12x
#4 Answer: 6x^2 -10x-24 Steps: Multiply the parentheses 3x•2x-3x•6+4•2x-4•6 Calculate the products 6x^2 -18+8x-4•6 Multiply the numbers 6x^2 -18+8x-24 Collect like terms 6x^2 -10x-24