Question

Simplify each product-

9. 7x(x+4)

11. 3m^2(10+m)

13. 4x(2x^3-7x^2+x)

@jwhite12

Answer 1

9. multiply the x to the other x which makes x^2
Then multiply 7*4 to get 28
So you will get 7x^2+28x

Answer 2

11. Do the same for this. 3m^2 will times with the x to make 3m^3
Then multiply 3m^2*10 and get 30m^2
Then you will get 3m^3+30m^2

Answer 3

13. Same for here. 4x times 2x^3 equals 8x^4 (see how the x's are adding into another x?)
Then do 4x times -7x^2 which equals -28x^3
Then do 4x times x which is 4x^2
Answer will be 8x^4-28x^3+4x^2

Answer 4

Thanks for the medal and welcome~

Answer 5

@Bpgrace

Answer 6

Thanks @DanteFemboy can you help with more?