Favjck
Favjck
22-02-2015
Mathematics
Answered
Which equation has the same solution as 2x^2+x-3=0
Answer :
Panoyin
Panoyin
22-02-2015
ax² + bx + c = 0
2x² + x - 3 = 0
2x² + x + (-3) = 0
x =
-b +/- √b² - 4ac
2a
x =
1 + /- √1² - 4(2)(-3)
2(2)
x =
1 + /- √1 +24
4
x =
1 +/- √25
4
x =
1 + /- 5
4
x =
1 + 5
x =
1 - 5
4
4
x =
6
x =
-4
4 4
x =
3
x = -1
2
x = 1 1/2
x = 1 1/2 x = -1
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