Q2 of 64 Page 43

Find the zeros of the following quadratic polynomials:

p(x) = 3x2 + 5x — 8

Here p(x) = 3x2 + 5x — 8


To find the zeros of p(x), let p(x) = 0


∴3x2 + 5x — 8 = 0


∴ 3x2 + 8x – 3x – 8 = 0


∴ x(3x + 8) – 1(3x + 8) = 0


∴ (3x + 8)(x – 1) = 0
∴ x = 1 or x = –


⇒ 1 and – are the zeros of the quadratic polynomial p(x).


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