7. Simplify.25 xt453 x10xt3-5 x10 5 x 12557 x6-5 – InterviewSolution

1.

7. Simplify.25 xt453 x10xt3-5 x10 5 x 12557 x6-5

Answer»

(1) 25*t^-4/5^-3*10*t^-8 = (5)^2*t^-4/5^-3*(5*2)*t^-8 = (5)^[2+2]*t^[-4+8]/2 = 625t^4/2

(2) 3^-5 * 10^-5*125/5^-7*6^-5= 3^-5*(5*2)^-5*5^3/5^-7*(3*2)^-5= 3^[-5+5]*5^[-5+3+7]*2^[-5+5]= 1*5^5*1= 3125

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