Question

Find the value of k, if 2x -1 is a factor of the polynomial 6x 2 + kx – 2.

Answer 1

Answer:

1

Step-by-step explanation:

if 2x -1 is a factor of the polynomial 6x² + kx - 2,

then at 2x-1=0 --> x=1/2, given polynomial will be equal to zero:

6x² + kx - 2=0

6*1/4+k*1/2-2=0

3/2+k/2-2=0

k/2=1/2

k=1

Answer is k=1

Answer 2

Answer:

Step-by-step explanation: Hey mate, here you go.

According to the qn

X =1/2 ( substitute 2x-1 to RHS)

6×(1/2)²+ 1/2k - 2

=6× 1/4+1/2k -2

=3/2 +1/2k-2

= -1/2 +1/2k

=1/2×2 =1

K= 1 is the answer

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