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____ [38]
3 years ago
7

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

Mathematics
2 answers:
iVinArrow [24]3 years ago
8 0
4x² - 100 = 0
<u>     + 100  + 100</u>
         <u> 4x²</u> = <u>100</u>
          4        4
           x² = 25
            x = <u>+</u>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.
Alex17521 [72]3 years ago
6 0
4x^2-100=0
4x^2=100
x^2=100/4
x^2=-25
x=5 or x=-5
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