myers123
myers123
09-03-2015
Mathematics
Answered
Solve by factoring.
5[tex] x^{2} [/tex]-6x-8=0
Answer :
Panoyin
Panoyin
09-03-2015
5x² - 6x - 8 = 0
x =
-(-6) +/- √((-6)² - 4(5)(-8))
2(5)
x =
6 +/- √(36 + 160)
10
x =
6 +/- √(196)
10
x =
6 +/- 14
10
x =
6 + 14
x =
6 - 14
10 10
x =
20
x =
-8
10 10
x = 2 x = -4/5
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