Answers

2015-07-03T23:22:39+08:00
X²-4x+12
a=1 (value of x²)
b=-4 (value of x)
c=12

formula
-b±√b²-4ac
--------------
2a

Substitute
-(-4)±√(-4)²-4(1)(12)
———————————
2(1)

4±√16-48
——————
2

4±√-32
————
2

2±√-16
Calcu mo nalang :)
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