Question
Factorise:
10x2 - 9x - 7
10x2 - 9x - 7
✓
Answer
10x2 - 9x - 7
= 10x2 + 5x - 14x - 7
= 5x(2x + 1) - 7(2x+ 1)
= (2x + 1)(5x - 7)
= 10x2 + 5x - 14x - 7
= 5x(2x + 1) - 7(2x+ 1)
= (2x + 1)(5x - 7)
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