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Simplify using identity : (x + 4) (x – 3) (x – 5) |
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Answer» GIVEN :- Simplify using identity : (x + 4) (x – 3) (x – 5) Answer :- → (x + 4)(x - 3)( x - 5) → (x + 4){x - 3)(x - 5)} using (x-a)(x-b) = x^2 - x(b+a) - ab → (x + 4)(x² - x(3 + 5) - 15) → (x + 4)(x² - 8x - 15) → x(x² - 8x - 15) + 4(x² - 8x - 15) → x³ - 8x² - 15x + 4x² - 32x - 60 → x³ - 4x² - 47x - 60 (Ans.) Learn more :- JEE mains QUESTION :- |
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