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Theorems for Continuity

Compute the f...

Question

Compute the following:
(i) $3^{4}$ (ii) $(- 5)^{2}$

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Solution

(i) $3^{4}$
$= 3 \times 3 \times 3 \times 3$
$= 9 \times 9$
$= 81$
$∴ 3^{4} = 81$
(ii) $(- 5)^{2}$
$= (- 1)^{2} 5^{2}$
$= 1 \times 25$
$= 25$
$∴ (- 5)^{2} = 25$ .

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