adiostorredore adiostorredore

27-11-2016
Mathematics

Answered

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?!

Verified Answer :

daaniel4 daaniel4

27-11-2016

Give 32, I'll explain.

(J + k) = 7 + (- 3)

(+) with (-) = ( - )
7 - 3 = 4 (its (j + k))
4 ^ 2 = 16
2 x 16 = 32

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