Question

if -1 is a zero of 2x²+kx..find k​

Answer 1

Answer:

Given, zero of the equation ( x) = - 1

and

Equation , 2x^2 + kx

so

${2x}^{2} + kx = 0 \\ \\ = > 2( - 1) ^{2} + k( - 1) = 0 \\ \\ = > 2 \times 1 + ( - k) = 0 \\ \\ = > 2 - k = 0 \\ \\ = > - k = - 2 \\ \\ = > k = 2 \\ \\ ( - \: and \: - \: cancelled)$

hope it helps uH :)

Answer 2

Answer:

2(1 )2+k(1)

2*1+(1)

2+1k

3k