Question

please help with question

Answer 1

Answer:

(-2 + 3 + 4 ) whole power 2

(-2 +7 ) whole power 2

(5) whole power 2

5×5=25..

Answer 2

Step-by-step explanation:

$( \frac{ - 1}{2} ) {}^{ - 2} + ( \frac{1}{3} ) {}^{ - 2} + ( \frac{1}{4} ) {}^{ - 2} \\ = \frac{1}{( \frac{ - 1}{2}) {}^{2} } + \frac{1}{( \frac{1}{3} ) {}^{2} } + \frac{1}{ (\frac{1}{4}) {}^{2} } \\ = 4 + 9 + 16 \\ = 29$

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