x2 - 14x = -49
∴ x2 - 14x + 49 = 0
∴ (x - 7)2 = 0
∴ x = 7
49-apex
63
63
252-70x+49 = (5x-7)(5x-7) when factored
x2+14x+49 = (x+7)(x+7) when factored
x2 - 14x + 49 = (x - 7)2
-x2+14x=49
Re-arranging, x2 - 14x +49 = 0 Factorising, (x-2)(x-2) = 0, hence x=2.
49 x2 + 14x = -7 x2 + 14x + 49 = 42 (x + 7)2 = 42 x = -7 ± √42
49-apex
63
63
(x2 + 14x + 49) = (x + 7)2
252-70x+49 = (5x-7)(5x-7) when factored
x2 - 14x + 49(x - 7) (x - 7)
How about finding the solutions of the quadratic equation: x^2-14x+49 = 0
x2+14x+49 = (x+7)(x+7) when factored