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Find the zeros of the quadratic …

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Find the zeros of the quadratic polynomial 4 x^2- 4×-3 and verify the relation between the zeros and its coefficient
  • 1 answers

Yogita Ingle 7 years, 3 months ago

p(x)  = 4x² - 4x - 3

⇒  4x² - 6x + 2x - 3

⇒ 2x( 2x -3) + 1(2x + 3)

⇒  (2x + 1) (2x -3)

p(x) = 0

(2x + 1) = 0 or (2x-3) = 0

x = -1/2 or x = 3/2

Hence, -1/2 and 3/2 are the zeroes of p(x).

Sum of zeroes = -1/2 + 3/2 = 2/2 = 1 = Coefficient of x / Coefficient of x²

Product of zeroes = (-1/2)(3/2) = -3/4 = Constant term/ Coefficient of x²

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