Question

if one zero of the polynomial 2xsquare + 3x + y is 1/2. Find the value of y and other zero

Answer 1

Hey guy here is ur answer :-____________________________________________________________

f(x) =2x^2+3x+y

f(1/2)=2(1/2)^2+3(1/2)+y

2(1/4)+3(1/2)+y=0

1/2+3/2+y=0

(1+3)/2+y=0

2+y=0

y= -2

There fore the value of y=-2

f(x) =2x^2+3x-2

Factorize it to get second zero,

2x^2+3x-2=0

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

2x(x+2)-1(x+2)=0, take x+2 as common

(2x-1)(x+2)=0

Therefore the second zero =1/2

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