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Mathematics

Grade10

Easy

Question

Find the product. (x – 12)(x + 12)

$x^{2} - 144$
$x^{2} + 144$
$x^{2} + 12 x + 144$
$x^{2} - 12 x + 144$

The correct answer is: $x squared – 144$

Using the pattern $left parenthesis a plus b right parenthesis left parenthesis a – b right parenthesis equals a squared – b squared comma$
$left parenthesis x plus 12 right parenthesis left parenthesis x – 12 right parenthesis equals x squared – 12 squared equals x squared – 144$

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