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Factorisation of Polynomials — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsFactorisation of Polynomials2 Marks
Question
Factorise:
15x2 - x - 28
✓

Answer

15x2 - x - 28
= 15x2 + 20x - 21x - 28
= 5x(3x + 4) - 7(3x + 4)
= (3x + 4)(5x - 7)

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