Question

"Find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients.
[tex]
(i) x^{2} - 2x - 8

(ii) 4s^{2} – 4s + 1

(iii) 6x^{2} – 3 – 7x

(iv) 4u^{2} + 8u

(v) t^{2} – 15

(vi) 3x^{2} – x – 4[/tex]"

Answer 1

Let x^2-2x-8 =0

Product =-8

Sum=-2

No.= -4,2

X^2-2x-8=0

X^2-4x+2x-8=0

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

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

Therefore x= -2,4