SOLUTION: if one of the roots of the equation 3x^2+19x+k=0 is -7 Find the value of k
Algebra.Com
Question 1152321: if one of the roots of the equation 3x^2+19x+k=0 is -7 Find the value of k
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
if one of the roots of the equation is
find the value of
given:
....substitute given root
=>
check:
.......factor
-> as you can see, if =>
RELATED QUESTIONS
Find the value of k in x^2+3x+k-1=0 if the quadratic equation has:
a) equal roots
b)... (answered by Fombitz)
Find the value of k on x^2+3x+k-1=0 if the quadratic equation has:
a) equal roots
b)... (answered by Fombitz)
Find k if the roots of the equation (k+3)x^2 - 2(k+1)x - (k+1) = 0 are equal. If k is not (answered by Boreal,MathTherapy)
if the roots of the equation. 6x^2-7x k =0 are rationfal ,then find the value of... (answered by ikleyn)
If two prime numbers are roots of the equation x^2-12x+k=0, what is the value of... (answered by Boreal,ikleyn)
What value of K will the roots of the equation 2x^2-3x+K=0 be imaginary? (answered by Theo)
The equation {{{x^2-3x-2=0}}} has roots {{{alpha}}} and {{{beta}}}, and the equation... (answered by Edwin McCravy)
Given that the equation {{{kx^2+12x+k=0}}} where k is a positive constant and has equal... (answered by lynnlo,vleith)
find the value(s) ok K that would make the roots of the equation
3x^2+Kx+5=0... (answered by checkley71)