value of : a) (- 7 )^2 b) 3^4
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Answered by
0
Answer:
15
Step-by-step explanation:
u should have to do your own
Answered by
0
Answer:
a) 49 b) 81
Step-by-step explanation:
a) = -7 * -7 = 49
b) = 3*3*3*3 = 81
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