Question

1) Resolva as equação a seguir:

F)4x(x+6)-x²=5x²

Answer 1

4x(x+6)-2²=5x²
4x²+24x-x²=5x²
3x²+24x=5x²
24x=2x²
2x²-24x=0
x(2x-24)=0
x=0
2x=24
x=12

Answer 2

f)

4x.(x + 6) - x² = 5x²

4x² + 24x - x² = 5x²

4x² - x² - 5x² + 24x = 0

3x² - 5x² + 24x = 0

- 2x² + 24x = 0
x.(- 2x + 24) = 0
x = 0

- 2x + 24 = 0
- 2x = - 24 (-1)
2x = 24
x = 24/2
x = 12

R.: x = 0 e x = 12