Question

if 2x+1 is a factor of 2x^2 + ax - 3, find the value of a​

Answer 1

HEYA!!

Answer:

a=-5

Step-by-step explanation:

$2x + 1 = 0$

$x = - \frac{1}{2}$

on putting this value in equation as it was it's factor:

$2x^{2} + ax - 3 = 0$

$2( \frac{ - 1}{2} )^{2} + a( \frac{ - 1}{2} ) - 3 = 0$

$2 \times \frac{1}{4} + a( \frac{ - 1}{2} ) - 3 = 0$

$\frac{1}{2} - \frac{a}{2} - 3 = 0$

$\frac{1 - a - 6}{2} = 0$

$\frac{ - 5 - a}{2} = 0$

$- 5 = a$

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Answer 2

❣❣heya❣❣

so your answer is above☝️☝️☝️☝️

hope it helps you