Question

Q. Find the value of the following.
(1/3)^(-2) plus (1/4)^(-2) plus (1/5)^(-2)​

Answer 1

50

Step-by-step explanation:

$\\ {( \frac{1}{3})}^{ - 2} + { (\frac{1}{4}) }^{ - 2} + { (\frac{1}{5}) }^{ - 2} \: \\ \\ = {3}^{2} + {4}^{2} + {5}^{2} \: \: \: \\ = 9 \: + \: 16 \: + \: 25 \\ = \: 50 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

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