Question

2x(x-2)=3x²+4x bhaskara

Answer 1

2 x (x - 2 ) = 3 x² + 4 x
2 x² - 4 x = 3 x² + 4 x
3 x² + 4 x = 2 x² - 4 x
3 x² - 2 x² + 4 x + 4 x = 0
x² + 8 x = 0
Δ = b² - 4 .a .c
Δ = 8²  - 4 . 1 . 0
Δ = 64  - 4 . 0
Δ = 64 - 0
Δ = 64
\/¨64 =8
x = - b +ou-8/2.1
x = -8 + 8/2
x = 0/2
x = 0
x = -8 - 8 / 2
x = -16/2
x = - 8
S = { 0,-8 }