Question

-5t(3t+9)^2

Answer 1

-45t^3-270t^2-405t

Answer 2

-5t(9t^2+54t+81)
=-45t^3-270t62-405t

Answer 3

Multiply each term in the first group by each term in the second group using the FOIL method. FOIL stands for First Outer Inner Last, and is a method of multiplying two binomials.

First, multiply the first two terms in each binomial group. Next, multiply the outer terms in each group, followed by the inner terms. Finally, multiply the last two terms in each group.
(-5t(9t^(2)+54t+81))

Multiply -5t by each term inside the parentheses.
(-45t^(3)-270t^(2)-405t)

Answer 4

-5t(9t^2+54t+81)

Answer 5

Thanks to all of you

Answer 6

here is another one