If f(x)=x2f(x) = x^2f(x)=x2 and g(x)=x+2g(x) = x+2g(x)=x+2, for what value of xxx is (f∘g)(x)=25(f \circ g)(x) = 25(f∘g)(x)=25?
x=3x = 3x=3 or x=−7x = -7x=−7
x=5x = 5x=5 or x=−5x = -5x=−5
x=3x = 3x=3 or x=−3x = -3x=−3
x=2x = 2x=2 or x=−2x = -2x=−2