KayyTee
KayyTee
27-04-2015
Mathematics
Answered
solve by completing the square:X^2+6x-12=0
Answer :
Panoyin
Panoyin
27-04-2015
x² + 6x -12 = 0
x =
-(6) +/- √((6)² - 4(1)(-12))
2(1)
x =
-6 +/- √(36 + 48)
2
x =
-6 +/- √(84)
2
x =
-6 +/- 2√(21)
2
x = -3
+
√(21)
x = -3 + √(21) x = -3 - √(21)
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