x2+26x = 68
Completing the square:
(x+13)2-169-68 = 0
(x+13)2-237 = 0
x+13 = -/+ sq rt 237
x = -13-/+ sq rt 237
x2 23x equals 0
49-apex
25/4 or 6.25
x = 0 or x =-5
Which number equals ?
Take the square root of both sides. x2 = 441 So x = 21
x2 23x equals 0
49-apex
it is 121
144
4
x2 - 6x + 9 = zero(x - 3 )(x - 3 ) = zerox - 3 = ZeroX=3
You need to add -6
25/4 or 6.25
49/4 or 12.25
25/4 or 6.25
You must add 1