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Mathematics
Santos
15 August, 08:31
If 4x^2-100=0, the roots are
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Kyra Wyatt
15 August, 11:45
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This is a difference of 2 perfect squares where you can factor x^2-y^2 = (x-y) (x+y) so
also if it is equal to zero and you factor, then each factor is assumed set to zero exg
xy=0 then assume x and/or y=0 so
4x^2-100
(2x) ^2 - (10) ^2 = (2x-10) (2x+10) = 0
so the roots are (2x-10) and (2x+10)
(solution is 5 and - 5)
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