Question

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算錯

4
解一元二次方程式-2 +3x+2
解:
2x² + 4x + 12 = 0
= x² + ³x + ² = 0
x ² + ² / 3 x + ( ²3 ) ² - ( ²33 ) ² + 1 = 0
(x + ²133 ) ² = = = + ²4
X+² ²3²3² = ± √² + ²4
X-1113-2
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0
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