how to change the equation below into factored form f(x)=(x+14)^2-49
Let (x + 14) = a
Let 7 = b
So...we have
(x + 14)^2 - 7^2 =
a^2 - b^2 =
(a + b) ( a - b) =
[ ( x + 14 ) + 7 ] [ (x + 14) - 7 ] =
[ x + 21 ] [ x + 7 ]
