Question

find the value of k if 3 is a zero of the polynomial 2 X square + X + k.​

Answer 1

$\large{\underline{\mathfrak{\green{\sf{Answer!!...}}}}}$

• value of x be 3...

$2 {x}^{2 } + x + k = 0$

$2 ({3})^{2} + 3 + k = 0$

$18 + 3 + k = 0$

$k = - 21$

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