Question 1067776
m^2 -m -15 = 0
:
add 15 to both sides of =
:
m^2 -m = 15
:
m^2 -m + (1/4) = 15 + (1/4)
:
(m - (1/2))^2 = 61/4
:
m - (1/2) = square root(61) / 2
:
m = (1/2) + or - square root(61) / 2
:
m = (1 + or - square root(61)) / 2
: