30-04-2015
Mathematics

contestada

x2-4x=177 (the 2 is an exponent)

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Panoyin Panoyin

30-04-2015

   x² - 4x = 177
x² - 4x - 177 = 0
x = -(-4) +/- √((-4)² - 4(1)(-177))
   2(1)
x = 4 +/- √(16 + 708)
      2
x = 4 +/- √(724)
    2
x = 4 +/- 2√(181)
   2
x = 2 + √(181)
x = 2 + √(181) x = 2 - √(181)

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