Question

Write the value of k for which x=2 is zero of polynomial x^2+2xk+2

Answer 1

x=2

2^2+2×2k+2=0

4+4k+2=0

6+4k=0

4k=-6

k=-6/4

k=-3/2

Answer 2

LET X= 2

NOW PUT THIS VALUE ON EQUATION AS FOLLOWS -

(2)^2+2(2)k+2= 0

4+4k+2=0

6+4k=0

4k= -6

k= -6/4

SO k= -3/2

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