Question
Factorise:
$3 x^2+10 x+8$
$3 x^2+10 x+8$
✓
Answer
$3 x^2+10 x+8$
$=3 x^2+6 x+4 x+8$
$\{24=3 \times 8,24=6 \times 4,10=6+4\}$
$=3 x(x+2)+4(x+2)$
$=(x+2)(3 x+4)$
$=3 x^2+6 x+4 x+8$
$\{24=3 \times 8,24=6 \times 4,10=6+4\}$
$=3 x(x+2)+4(x+2)$
$=(x+2)(3 x+4)$
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