Question
Factorise:
2x2 + 3x - 90
2x2 + 3x - 90
✓
Answer
2x2 + 3x - 90
= 2x2 - 12x + 15x - 90
= 2x(x - 6) + 15(x - 6)
= (x - 6)(2x + 15)
= 2x2 - 12x + 15x - 90
= 2x(x - 6) + 15(x - 6)
= (x - 6)(2x + 15)
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