Which equation has the same solution as 2x^2+x-3=0

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22-02-2015
Mathematics

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Which equation has the same solution as 2x^2+x-3=0

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Panoyin Panoyin · Answer 1 · 2015-02-22T10:32:50-05:00

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