Question

2. find the zeroes of the quadratic polynomial 5x²+8 x-4 and verify the relationship between the zeroes and the coefficient of the polynomial
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Answer 1

Answer:

5x²+8x-4

5x²+10x-2x-4

5x(x+2)-2(x+2)

(5x-2)(x+2)

x=2/5 ; -2

sum of the roots =-b/a

(2/5)-2=-8/5=-b/a

product of the roots=c/a

(2/5)(-2)=-4/5=c/a