Question
Factorize :
2x² + x – 45
✓
Answer
2x² + x – 45 2 × (- 45) = -90
= 2x² + 10x – 9x – 45
= 2x(x + 5) – 9 (x + 5)
= (x + 5) (2x – 9)
= 2x² + 10x – 9x – 45
= 2x(x + 5) – 9 (x + 5)
= (x + 5) (2x – 9)
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Simplify:
$\frac{7}{9}+\frac{3}{-4}$
→$\frac{7}{9}+\frac{3}{-4}$
Factorize :
x² + 9x + 18