Question

If X equal to 2 by 3 is a solution of 15 X square + kx - 4 equal to zero find k

Answer 1

Step-by-step explanation:

Given: x=2/3

Simply plot the value of x in the given equation 15x^2 + Kx-4

• 15×(2/3)^2 + K(2/3) = 4

• 20/3 + 2K/3 =4

• 20+2K= 12

TAKE 2 COMMON

• 2(10+K) = 12

• K = -4

Hope it helps you