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Finding the Square of a Number

If a=2 and b=...

Question

If $a = 2$ and $b = 3$ , find the value of
(i) $(a + b)^{2}$
(ii) $(b - a)^{3}$

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Solution

(i) $(a + b)^{2}$
$= (2 + 3)^{2} = (5)^{2} = 5 \times 5 = 25$

(ii) $(b - a)^{3}$
$= (3 - 2)^{3} = (1)^{3}$
$= 1 \times 1 \times 1 = 1$

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