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Como puedo resolver x ^ 2 - 4x = 0 y 2x ^ 2 = x ^ 2 + x y x ^ 2 + 4 = 5x + 4?

Como puedo resolver x ^ 2 - 4x = 0 y 2x ^ 2 = x ^ 2 + x y x ^ 2 + 4 = 5x + 4?

1Santiagoceballoss

En resumen

_________________x² - 4x = 0x . (x - 4) = 0x = 0 o x - 4 = 0x1 = 0 , x2 = 4_________________2x² = x² + x2x² - x² - x = 0x² - x = 0x . (x - 1) = 0x = 0 o x - 1 = 0x1 = 0 , x2 = 1_________________x² + 4 = 5x + 4x² = 5xx² - 5x = 0x . (x - 5) = 0x = 0 o x - 5 = 0x1 = 0 , x2 = 5.

Mejor respuesta

NATHLINDA8987

6

_________________x² - 4x = 0x .

(x - 4) = 0x = 0 o x - 4 = 0x1 = 0 , x2 = 4_________________2x² = x² + x2x² - x² - x = 0x² - x = 0x .

(x - 1) = 0x = 0 o x - 1 = 0x1 = 0 , x2 = 1_________________x² + 4 = 5x + 4x² = 5xx² - 5x = 0x .

(x - 5) = 0x = 0 o x - 5 = 0x1 = 0 , x2 = 5.