Question

if -2 is the root of the equation 3x² - 5x + k = 0, what is the value of k?​

Answer 1

we know that given in question x=3

Let, put the value of x in given equation

=> kx²-10x+3=0

=> 3(k)² -(10×3) +3=0

=> 3k²-30+3=0

=> 3k²-27=0

=> 3k²=27

=> k²=27/3

=>k²=9

=> k=3 ANSWER.

I HOPE THAT IT'S HELPFUL FOR YOU.

Answer 2

Step-by-step explanation:

If – 2 is a root of the quadratic equation 3x² – 5x + k = 0, then the value of k is. 13.