Multiply (3b 2 + 4 b + 8) (-2 b 2 + b + 10).

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