Asked by katie A
Help Solve x^2+2x-4=0
What is the solution
What is the solution
Answers
Answered by
MathMate
There is no rational root, use the quadratic formula:
a=1,b=2,c=-4
x=(-b±sqrt(b²-4ac))/2a
=(-2±sqrt(2²-4(1)(-4))/2
=-1±sqrt(5)
Substitute the solutions into the original equations to check the answer.
a=1,b=2,c=-4
x=(-b±sqrt(b²-4ac))/2a
=(-2±sqrt(2²-4(1)(-4))/2
=-1±sqrt(5)
Substitute the solutions into the original equations to check the answer.
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