Question

a(ax + y) - b(bx - y) = 4(3x + y)
Indicar a-b​

Answer 1

Respuesta:

3

Explicación paso a paso:

a²x + ay - b²x + by = 12x + 4y

a²x - b²x + ay + by = 12x + 4y

(a² - b²)x + (a+b)y = 12x + 4y

(1) a² - b² = 12 (2) a+b=4

(a+b) (a-b) = 12

4(a-b)=12

a-b=12/4

a-b=3