1.

Simplify using identity : (x + 4) (x – 3) (x – 5)

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.)

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JEE mains QUESTION :-

brainly.in/question/22246812



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