Question

Find the zero of the quadratic polynomial and verify the relation between the zeros of the co efficient x square minus 2x minus 8

Answer 1

Xsq - 2x - 8

Xsq - 4x + 2x - 8

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

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

x - 4 = 0

x = 4......

x+ 2 = 0. Alpha is 4 and betha is -2.

x = -2.

Alpha + Betha = -b/a ....

4 + {-2} = - { -2 }

-2 = -2.

Alpha × betha = c /a

4 × -2 = -8 × 1.

-8 = -8...


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