Question

1. Find the zeroes of the following quadratic polynomials and verify the relationship between
the zeroes and the coefficients.
i)x²- 2x -8
ii) t²-15
iii) 4u²+ 8u

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Answer 1

Answer:

i.

${x }^{2} - 2x - 8 = 0$

${x }^{2} - (4 - 2)x - 8 = 0$

${x }^{2} - 4x + 2x - 8 = 0$

$x(x - 4) + 2(x - 4) = 0$

$(x - 4 = 0)(x + 2 = 0)$

$x = 4)(x - 2)$