Write the value of the expressions when $a = 1, b = 3$ and $c = 3 .$
$4 a^{2} b^{2} - 6$

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Solution

This algebraic expression can be written as :
$4 a^{2} b^{2} - 6 = 4 \times a \times a \times b \times b - 6$
Substituting the values of $a$ and $b$
$4 a^{2} b^{2} - 6 = 4 \times 1 \times 1 \times 3 \times 3 - 6 = 36 - 6 = 30$
So, the value of the given algebraic expression is $30$ .

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