Answer: -30b^2+76b+80 Explanation: Multiply the second parenthesis by each term from the first parenthesis: 3b•2(-2•2+b+10)+4b•(-2b•2+b+10)+8(-2b•2+b+10) Then distribute 3b•2 through the parenthesis -24b^2+6b^2+60b+4b•(-2b•2+b+10)+8(-2b•2+b+10) Then collect like terms -30b^2+60b+40b-32b+8b+80 Collect like terms= -30b+76b+80
