1.

レーEvaluate: (30-49 + (50 × 40)× (50 + 40),[252 257Find the value of252Sy Find the value ofx if(용)"xes=-62

Answer»

1) (3^0 - 4^0) + (5^0 + 4^0) + (5^0 + 4^0) = (1+1) + (1+1) + (1+1) = 2+2+2 = 6

2) (25^5/2 - 25^7/2)/25^5/2 = (5^5 - 5^7)/ 5^5 = 5^5(1 - 25)/5^5 = - 24

3) (-2/5)^-6 * (-2/5)^4 = (-5/2)^2x (-2/5)^[-6+4] = (-5/2)^2x (-5/2)^2 = (-5/2)^2xBase are same power will be equalTherefore, 2 = 2x x = 1



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