Multiply: ( -6 + 7t)(-5 + 9t)?

Answer 1

You need to expand the two by multiplying all the different combinations then adding the result:

1) multiply the first terms of each parenthesis:
-6 * -5 = +30

2) multiply the last terms of each parenthesis:
7t * 9t = 63t^2

3) multiply the first term from the first parenthesis by the second term from the second parenthesis:
-6 * 9t = - 54t

4) multiply the second term from the first parenthesis by the first term from the second parenthesis:
7t * -5 = -35t

now, add all of the answers together to get your final answer

= 30 + 63t^2 + (-54t) + (-35t)
= 30 + 63t^2 - 54t - 35t
= 30 + 63t^2 - 89t

but usually we write with bigger powers first, like:

63t^2 - 89t + 30

Answer 2

I was taught to multiply binomials do the following:

F.O.I.L.
First terms multiplied
Outer terms multiplied
Inner terms multiplied
Last terms multiplied
--Combine like terms--

F -6 x -5 = 30
O -6 x 9t = -54t
I 7t x -5 = -35t
L 7t x 9t = 63t^2


63t^2 - 89t + 30

Answer 3

(- 6 + 7T)(- 5 + 9T) =

30 + 35t + 54t + 63t² =

30 + 89t + 63t²

- - - - - - - - - -s-

Answer 4

I guess you want the expanded expression, for homework most likely. 30-89t+63t^2.

Answer 5

63t squared - 89t + 30

Answer 6

63t^2-89t+30

Answer 7

jeez. idiot. be on the show: "Are you Smarter than a 5th Grader?"

30 - 54t - 35t + 63 t^2

30 - 89t + 63 t^2

63t^2 - 89t + 30

Answer 8

= 30 - 54.t - 35.t + 63.t² = 63.t² - 89.t² + 30

Answer 9

30-89t+63t²

Answer 10

30-54t-35t+63t^2
30-89t+63t^2