Question

(3) (5a)2 x (5a)- 2 = ?
(a) 25a4 (b) 1
(c) O
(d) 5a4

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Answer 1

Step-by-step explanation:

a) 25a4.

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Answer 2

$\huge\underline\mathrm\red{Answer}$

$= ( {5a)}^{2} \times {(5a)}^{ - 2}$

$= {25a}^{2} \times {25a}^{2}$

$= {25a}^{4}$

Hence Option-A is correct