How do you use the quadratic formula and solve #0=10x^2 + 9x-1#?

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Answer 1 · 2015-05-12T20:45:05

A quadratic equation is written in the form:
#ax^2 + bx + c = 0#

The given equation #10x^2+9x-1=0#

Where:
#a=10#
#b=9#
#c=-1#

The quadratic formula can be used to find the roots of any quadratic equation.

#x= (-b+- sqrt(b^2-4ac))/(2a)#

So I encourage you to plug in the values from this equation and simplify.

The answers should be #x = −1 and x= 1/10#