What is the quadratic formula for x^2-7x-6=0x2−7x−6=0?

1 Answer
Ridinion K.
May 16, 2018

x=7.53x=7.53 and x=-0.53x=−0.53

Explanation:

The quadratic formula is:

x=(-b^+-sqrt(b^2-4ac))/(2a)x=−b±√b2−4ac2a

The coefficient for a=1a=1, b=-7b=−7 and c=-6c=−6. Substitute these values in to the quadratic formula:

x=(-(-7)+sqrt((-7)^2-4*1*(-4)))/(2*1)x=−(−7)+√(−7)2−4⋅1⋅(−4)2⋅1
x=(-(-7)-sqrt((-7)^2-4*1*(-4)))/(2*1)x=−(−7)−√(−7)2−4⋅1⋅(−4)2⋅1

Solutions:

x=7.53x=7.53
x=-0.53x=−0.53

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