If x = − 6, evaluate: 3x^2 + 8x - Vidyadip

Question

If $x = − 6$, evaluate:
$3x^2 + 8x$

✓

Answer

$3x^2 + 8x$
$= (3 \times x \times x) + (8 \times x)$
$= (3 \times (− 6) \times (− 6)) + (8 \times (− 6))$
$= − 108 + (− 48)$
$= 60$

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