that would be 4,015 my friend
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(x + 7)2 = 5 x + 7 = ±√5 x + 7 - 7 = -7 ± √5 x = -7 ± √5
y=7+x =x=7-x
If (x + 3)(x +7) = 0 then either: x + 3 = 0 or x + 7 = 7 Hence x = -3 or -7.
x/35 =7 (x/35) *35 = 7 * 35 {multiply both sides by 7} x = 7 * 35 x = 245
It is f(x) = 7/x.