How do you solve 5x^2-8x=6 using the quadratic formula?

1 Answer
Jun 11, 2018

x=(4+-sqrt46)/5

Explanation:

5x^2-8x=6
5x^2-8x-6=0

Remember the general form of an equation is ax^2+bx+c=0 where a,b and c are constants.
Using the quadratic formula.
x=(-b+-sqrt(b^2-4ac))/(2a)

x=(8+-sqrt(64+120))/(2times5)

x=(8+-sqrt184)/10

x=(8+-2sqrt46)/10

x=(4+-sqrt46)/5