Respuestas
Respuesta:
1) ax + bx + a = 2a + b
ax + bx = a + b
x ( a + b ) = a+ b
x = 1
2) ax + b^2 = a^2 + bx
ax - bx = a^2 - b^2 (Resta de cuadrados)
x ( a - b ) = ( a + b ) ( a - b )
x = a + b
3) x (3 - 2b) - 1 = x (2 - 3b) - b^2
b^2 - 1 = x (2 - 3b) - x (3 - 2b)
b^2 - 1 = x ((2 - 3b) - (3 - 2b))
b^2 - 1 = x ( 2 - 3b - 3 + 2b )
b^2 - 1 = x ( -b - 1 )
(b - 1) (b + 1) = x ( -b - 1 )
(b - 1) (-1) = x
1 - b = x
4) 3 ( 2a - x) + ax = a^2 + 9
6a - 3x + ax = a^2 + 9
- 3x + ax = a^2 - 6a + 9
x (a - 3) = (a - 3)^2
x = a - 3
5) a (x - a) - 2bx = b (b - 2a - x)
ax - a^2 - 2bx = b^2 - 2ab -bx
ax + bx - 2bx = b^2 - 2ab + a^2
x ( a + b - 2b) = ( a - b)^2
x ( a - b) = ( a - b)^2
x = ( a - b)