evaluatr (-2/7)^-4 × (-5/7)^2
Asked by hassantakhi100email
| 24th Dec, 2020,
11:57: PM
Expert Answer:
(-2/7)-4 x (-5/7)2
= (-7/2)4 x (-5/7)2 ... (Since (a/b)-m = (b/a)m)
= (7/2)4 x (5/7)2
= (74/24) x (52/72) (Since (a/b)n = an/bn )
= (72/24) x 52
= (49/16) x 25
= 1225/16
= (74/24) x (52/72) (Since (a/b)n = an/bn )
Answered by Renu Varma
| 5th Jan, 2021,
11:35: AM
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