Question

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Use the quadratic formula to solve the equation.

X^2 - 7x – 6 = 0

Answer 1

Step-by-step explanation:

$x = \frac{ - b + - \sqrt{ {b}^{2} - 4ac} }{2a}$

a=1.

b=-7

c=-6

x=

$\frac{ - ( - 7) + \sqrt{ (- 7)^{2} - 4(1)( - 6)} }{2(1)}$

OR

$\frac{ - ( - 7) - \sqrt{ (- 7) ^{2} - 4(1)( - 6)} }{2(1)}$

Therefore x= 7,772

OR

x=-0,772