SOLUTION: If 1 is a root of the equation 5x^2 +kx-3=0,find the other root.

Question 832338: If 1 is a root of the equation 5x^2 +kx-3=0,find the other root.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If 1 is a root of the equation 5x^2 +kx-3=0,find the other root.
------
Using synthetic division::
1)....5....k....-3
......5....k+5..|..K+2
====
Solve:: k+2 = 0
k = -2
===================
Equation:
y = 5x^2 -2x -3
======
Factor: y = (x-1)(5x+3)
Other root:: x = -3/5
=============================
Cheers,
Stan H.
===============
RELATED QUESTIONS
If 1 is a root of the equation x^3-5x^2+17x-13=0, find the other two roots. (answered by Fombitz)

if on root of the equation 2x^2-kx+64=0 is twice the other root, then find the value of (answered by KMST)

Given the equation kx^2+(k-1)x+2k+3=0 where k is a non-zero integer, find the value of k... (answered by josmiceli)

If 1+2i is a root of X^2-kx+5=0, find the value of k the x^2 means that the x is... (answered by robertb)

If (2x-1) is a factor of f(x)=2x^3-5x^2-kx+3 find the value of k. Find the other two... (answered by stanbon)

find the value of k and the other root of 4x^2 + kx + 15=0 if 5 is one of its... (answered by ikleyn)

one of the roots of the equation 5x^2 + kx = 4 is x = -2 the other root is x = ...what... (answered by richwmiller,stanbon)

one root of the quadratic equation x2-kx+8=0 is negative of the other. the value of k... (answered by Edwin McCravy,Theo)

If one root of the equation ... 2x^2+10x+k=0 is -2, find K and the other... (answered by robertb,ewatrrr)