Solve 7⋅x = x2 - 6 by using the Quadratic Formula. Round to the nearest tenth.

write in standard form ....

x^2 - 7x - 6 = 0

x = (7 ± √(7^2 - 4(1)(-6)) )/2

you finish the arithmetic

you should get :
x = 7.8 or x = -.8