alyssasimeon alyssasimeon

07-05-2015
Mathematics

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if 4x^2 - 100 = 0 then the roots of the equation are

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Panoyin Panoyin

07-05-2015

4x² - 100 = 0
     + 100 + 100
   4x² = 100
      4 4
   x² = 25
      x = +5
4(5)² - 100 = 0
4(25) - 100 = 0
100 - 100 = 0
   0 = 0

4(-5)² - 100 = 0
4(25) - 100 = 0
   100 - 100 = 0
      0 = 0

The roots of the equation is positive or negative 5.

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anshupatel199 anshupatel199

07-05-2015

4x^2-100=0
4x^2=100
x^2=100/4
x^2=-25
x=5 or x=-5

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