Question

Find the product mentally.

(2m - 9)2


2m2 - 18m + 81
2m2 - 81m + 81
4m2 - 36m + 81

Answer 1

i think im supposed to use the foil method but i dont know how to on this

Answer 2

Yes, you are correct!

Answer 3

When something is squared you need to write it twice...

Answer 4

(2m-9)(2m-9)

Now, can you foil?

Answer 5

one sec let me work it out on paper

Answer 6

m equals 14

Answer 7

@Hines-Ward it does not equal 14...

Answer 8

(2m)(2m)+(2m)(-9)+(-9)(2m)+(-9)(-9).........like this ?? and ill simplify more but am i on the right track ??

Answer 9

oh sorry

Answer 10

Yes, @dirtydan667 perfect so far!

Answer 11

kk

Answer 12

4m+162x-18+81...........like so ??

Answer 13

No... lets see if you can do it best this way...

Answer 14

ooops the second number should be -18

Answer 15

(2m-9)(2m-9)

2m * 2m = \[4m ^{2}\]

Answer 16

Now, multiply what is inside of both parenthesis...

(2m * -9) + (2m * -9) =
-18 + -18 = -36

Answer 17

-9 * -9 = 81

Answer 18

Do you see how you can break down everything?

Answer 19

i think i messed up somewhere can you go threw it

Answer 20

(2m)(2m)+(2m)(-9)+(-9)(2m)+(-9)(-9)
4m^2 -18m -18m + 81

What you had here was perfect...

Answer 21

simplify the middle...

Answer 22

so C

Answer 23

4m^2-36m+81

Answer 24

thanks for the help @MathLegend

Answer 25

No problem @dirtydan667