Register

If x=3 is a solution of the equation x^2+kx+15=0, find the value of k. Hence find the other solution of the equation

If x=3 is a solution of the equation x^2+kx+15=0, find the value of k. Hence find the other solution of the equation
asked 69.8k views
4 votes
If x=3 is a solution of the equation x^2+kx+15=0, find the value of k. Hence find the other solution of the equation

asked
User MrPotatoHead
by
7.4k points

1 Answer

4 votes
x^2 + kx + 15 = 0
3^2 + 3k + 15 = 0
9 + 3k + 15 = 0
24 + 3k = 0
3k = -24
k = -24/ 3
k = -8
answered
User MiseryIndex
by
8.5k points
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Link Copied!