Question

4b(3b²+5b-7)+2(b³-4b²+5)​

Answer 1

Answer:

14b^{3}+12b^{2}-28b+10

Step-by-step explanation:

its just

4 b ( 3 b ^ { 2 } + 5 b - 7 ) + 2 ( b ^ { 3 } - 4 b ^ { 2 } + 5 )

Use the distributive property to multiply 4b by 3b^{2}+5b-7.

12b^{3}+20b^{2}-28b+2\left(b^{3}-4b^{2}+5\right)

Use the distributive property to multiply 2 by b^{3}-4b^{2}+5.

12b^{3}+20b^{2}-28b+2b^{3}-8b^{2}+10

Combine 12b^{3} and 2b^{3} to get 14b^{3}.

14b^{3}+20b^{2}-28b-8b^{2}+10

Combine 20b^{2} and -8b^{2} to get 12b^{2}.

14b^{3}+12b^{2}-28b+10