Resuelve las siguientes ecuaciones de primer grado a)2x - 10 = 0 b)5x + 4 = x - 8 c)x - 2 (x - 1) = 4 d)2 (3x - 5) - x - (2x + 3) = 1 - (2x - 5 )e )7(x + 2) + 4 (x + 3) = 3x + 1 f)3(x - 3) - 4 (2 - 3x) = 2 (1 - 2x).
ax² + bx + c = 0
A)2x - 10 = 0 2x = 10 x = 10 / 2 x = 5
b)5x + 4 = x - 8 5x + x = - 8 - 4 6x = - 12 x = - 12 / 6 x = - 2
c)x - 2 (x - 1) = 4 x - 2x + 2 = 4 - x + 2 = 4 - 4 + 2 = x - 2 = x
d)2 (3x - 5) - x - (2x + 3) = 1 - (2x - 5 ) 6x - 10 - x - x - 2x - 3 = 1 - 2x + 5 2x - 13 = 2x + 4 2x + 2x = - 4 + 13 4x = 9 x = 9 / 2 o⇒ x = 4, 5
e )7(x + 2) + 4 (x + 3) = 3x + 1 7x + 14 + 4x + 12 = 3x + 1 11x + 26 = 3x + 1 11x - 3x = - 26 + 1 8x = - 25 x = - 25 / 8 o⇒ x = - 3, 125
f)3(x - 3) - 4 (2 - 3x) = 2 (1 - 2x) 3x - 9 - 8 + 12x = 2 - 4x 15x - 17 = 2 - 4x 15x + 4x = 2 + 19 19x = 21 x = 21 / 19 o⇒ x = 1, 105.
Respuesta : a)2x - 10 = 0 2x = 10 x = 10 / 2 x = 5b)5x + 4 = x - 8 5x + x = - 8 - 4 6x = - 12 x = - 12 / 6 x = - 2c)x - 2 (x - 1) = 4 x - 2x + 2 = 4 - x + 2 = 4 - 4 + 2 = x - 2 = xd)2 (3x - 5) - x - (2x + 3) = 1 - (2x - 5 ) 6x - 10 - x - x - 2x - 3 = 1 - 2x + 5 2x - 13 = 2x + 4 2x + 2x = - 4 + 13 4x = 9 x = 9 / 2 o⇒ x = 4, 5e )7(x + 2) + 4 (x + 3) = 3x + 1 7x + 14 + 4x + 12 = 3x + 1 11x + 26 = 3x + 1 11x - 3x = - 26 + 1 8x = - 25 x = - 25 / 8 o⇒ x = - 3, 125 f)3(x - 3) - 4 (2 - 3x) = 2 (1 - 2x) 3x - 9 - 8 + 12x = 2 - 4x 15x - 17 = 2 - 4x 15x + 4x = 2 + 19 19x = 21 x = 21 / 19 o⇒ x = 1, 105 Ver más en Brainly.
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Lat / tarea / 8376022#readmoreExplicación paso a paso :
1. Se preparan las dos ecuaciones, multiplicándolas por los números que convenga.
Respuesta : - 3(7 / 3x_2 / 4x)_5x + 1 / 3 = 11 / 6x.
(X + 1)(X - 3) / 2 + X = X / 4X ^ 2 - 3X + X - 3 / 2 + X = X / 4X ^ 2 - 2X - 3 / 2 + X = X / 42X + X ^ 2 - 2X - 3 / 2 = X / 4(2X + X ^ 2 - 2X - 3)(4) = 2X4X ^ 2 - 12 = 2X4X ^ 2 - 2X - 12 = 02 + - raix cuadrada de 4 +…