Maths-
General
Easy

Question

Simplify:
(1/4)−2 − 3 (8)2/3 (40) + (9/16)−1/2

hintHint:

In Mathematics, lets say, "a" represents a number and "n" is the number of times that number is to be multiplied with itself, in order to get a desired result. Then, such result can be written as an, where a is called the base and n is its power/ exponent.
an = a × a × ... × a            n times.

The correct answer is: Simplifying the given expression, we get- 16/3 or 5.33.


    Step-by-step solution:-
    (1/4)−2 − 3 (8)2/3 (40) + (9/16)−1/2
    = (4)2 − 3 (8)2/3 × 1 + (16/9)1/2…........................................................................... (b-n = 1/bn & b0 = 1)
    = (22)2 - 3 (23)2/3 + (24/32)1/2
    = 24 - 3 × 22 + 24×1/2 / 32×1/2 ............................................................................. [(bn)m = bnm]
    = 24 - 3 × 22 + 22 / 3
    = 16 - 3×4 + 4/3
    = 16 - 12 +4/3
    = 4 + 4/3
    = 12/3 + 4/3
    = 12+4 / 3
    = 16/3 = 5.33
    Final Answer:-
    ∴ Simplifying the given expression, we get- 16/3 or 5.33.

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