brokenheart1
brokenheart1
15-06-2018
Mathematics
contestada
PLEASE HELP! MATH QUESTION!
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Plasmataco
Plasmataco
15-06-2018
44)
5x ^ 2 - 10 = x ^ 2 + 90
4x ^ 2 = 100
x ^ 2 = 25
x = 5, -5
45)
x ^ 2 - 6x + 9 = 0
(x - 3) ^ 2 = 0 <---this kind of just comes from experience... not sure how to explain it...
x - 3 = 0
x = 3
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