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Donna Bright
Mathematics
17 January, 21:48
If 4x^2-100=0 the roots of the equation are
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Sammy Copeland
17 January, 21:49
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Your equation: 4x² - 100 = 0
Factor the left side: (2x + 10) · (2x - 10) = 0
This equation is true if either factor is zero.
- - One factor: 2x + 10 = 0
Divide each side by 2: x + 5 = 0
Subtract 5 from each side: x = - 5.
- - The other factor: 2x - 10 = 0
Divide each side by 2: x + 5 = 0
Add 5 to each side: x = 5.
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