Write the value of the expressions when $a = 1, b = 3$ and $c = 3 .$
$3 b^{2} + 4 c^{2}$

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Solution

We can write the given algebraic expression as :
$3 b^{2} + 4 c^{2} = 3 \times b \times b + 4 \times c \times c = 3 \times 3 \times 3 + 4 \times 3 \times 3 = 27 + 36 = 63$
So, the value of given algebraic expression is $63 .$

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