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Use the quadratic formula to solve the equation.

X^2+5x-1=0

Show work please

User Aleksxor
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1 Answer

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x² +5x+1 =0 it's a quadratic equation of the form: ax²+bx+c=0

Solving this equation is finding the roots of this equation to that end we use the following formula:

x' =[-b+√(b²-4ac)]/2a & x"=[-b-√(b²-4ac)]/2a
Now replace a, b & c by their respective values:
a=1, b=5 & c=1
& you will find
x' =(-5+√21√)/2 or x'=-0.208
& x" =(-5-√21)/2 or x" =-4.79
User RosAng
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