Question

find the zero of the polynomial quadratic polynomial and verify the relationship between the zeros and the coefficients x²-2x-8​

Answer 1

Answer:

x²-2x-8

Step-by-step explanation:

x²-4x+2x-8

x(x-4)+2(x-4)

(x+2) (x-4)

x=-2,x=4

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Answer 2

Answer:

x²-2x-8

x²-4x+2x-8

x(x-4)+2(x-4)

(x-4)(x+2)

x-4=0 or x+2=0

x=4 or x= -2

therefore,4 and -2 are the zeroes of given polynomilal

relationship between zeroes and coefficients:

sum of zeroes= 4+(-2)=4 - 2 =2 = -(-2)/1 = -b/a

product of zeroes = 4×-2 = -8 = -8/1 =c/a