3x² - 8x = x²
3x² - 8x - x² = 0
2x² -8x = 0
Δ = -8² - 4 . 2 . 0
Δ= 64 - 0
Δ = 64
x1= -(-8) + √64 / 2 . 2
x1= 8 +8 / 4
x1 = 4
x2= 8 - 8 / 4
x2= 0/4 = 0
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3x² - 8x = x²
3x² - 8x - x² = 0
2x² -8x = 0
Δ = -8² - 4 . 2 . 0
Δ= 64 - 0
Δ = 64
x1= -(-8) + √64 / 2 . 2
x1= 8 +8 / 4
x1 = 4
x2= 8 - 8 / 4
x2= 0/4 = 0