Question

(d) If x = 2 is a solution of kx2 + 2x - 3 = 0, the value of k is
(i) 4
(ii) 2
(iii)-1/4​

Answer 1

Answer:

d

Step-by-step explanation:

substitute x= 2 in the equation.

k(2)(2) + 2(2) - 3 = 0

4k + 4 -3 =0

4k= -1

k = -1/4

Answer 2

Step-by-step explanation:

$kx {}^{2} + 2x - 3 = 0 \\ 4k + 4 - 3 = 0 \\ 4k + 1 = 0 \\ k = - 1 \div 4$

answer (iii)