vitkus
vitkus
26-04-2016
Mathematics
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If 4x^2-100=0 the roots of the equation are
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AL2006
AL2006
26-04-2016
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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