If the second power of - x + X + 3 = 0, then the second power of 3x is - 3x | Math enthusiast | Mathematical art

If the second power of - x + X + 3 = 0, then the second power of 3x is - 3x

－x²＋x＋3=0
Then: - X & # 178; + x = - 3, that is: X & # 178; - x = 3
3x²－3x=3(x²－x)=3×3=9

3x (x + 2) - 2 (the second power of X + 2) = (X-2) (x + 3)

According to the original formula: 3x + 6x-2x-4 = x + X-6
The result is: 5x + 2 = 0
X=-0.4

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