Question 269830
Please help me solve the equation: {{{ (3f-1)^2+15f=5 }}}.
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You can expand it, but there's quicker way:
{{{ (3f-1)^2+15f=5 }}}
{{{ (3f-1)^2+15f-5 = 0}}}
{{{ (3f-1)^2+ 5*(3f-1) = 0 }}}
((3f-1) + 5)*(3f-1) = 0
(3f+4)*(3f-1) = 0
f = -4/3
f = 1/3