CEMC Fermat, 2024

Algebra Difficulty 1.1 Junior Find the answer Canada

If $x=2$ , the value of $4x^2-3x^2$ is

Pick one

Solution

Simplifying, $4x^2 - 3x^2 = x^2$ . When $x=2$ , this
expression equals $4$ .

Alternatively, when $x = 2$ , we have
$4x^2 - 3x^2 = 4 \cdot 2^2 - 3 \cdot 2^2 = 16 - 12 = 4$ .

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