If j = 7 and k = -3, find the value of 2(j + k)^2. options 16 64 32 36 Please explain! It's not 64 and I don't know what I did wrong?!

asked Oct 17, 2017 220k views

2 votes

If j = 7 and k = -3, find the value of 2(j + k)^2.

options
16
64
32
36
Please explain! It's not 64 and I don't know what I did wrong?!

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3 votes

Give 32, I'll explain.
(J + k) = 7 + (- 3)
(+) with (-) = ( - )
7 - 3 = 4 (its (j + k))
4 ^ 2 = 16
2 x 16 = 32

Hyuan answered Oct 21, 2017

by Hyuan

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