Question
Factorise:
15x2 + 2x - 8
15x2 + 2x - 8
✓
Answer
15x2 + 2x - 8
= 15x2 - 10x + 12x - 8
= 5x(3x - 2) + 4(3x - 2)
= (3x - 2)(5x + 4)
= 15x2 - 10x + 12x - 8
= 5x(3x - 2) + 4(3x - 2)
= (3x - 2)(5x + 4)
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