laticiajohnson9
laticiajohnson9
28-08-2015
Mathematics
contestada
solve by factoring 4x^2-25=0
Respuesta :
Panoyin
Panoyin
28-08-2015
4x² - 25 = 0
4x² - 10x + 10x - 25 = 0
2x(2x) - 2x(5) + 5(2x) - 5(5) = 0
2x(2x - 5) + 5(2x - 5) = 0
(2x + 5)(2x - 5) = 0
2x + 5 = 0 U 2x - 5 = 0
- 5 - 5 + 5 + 5
2x = -5 2x = 5
2 2 2 2
x = -2¹/₂ x = 2¹/₂
Solution Set: {-2¹/₂, 2¹/₂}
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