1.

X^2+3x+2=0...............

Answer»

{x}^{2} + 3x + 2 = 0 \\ = > {x}^{2} + 3x = - 2 \\ = > x(x + 3x) = - 2 \\ = > x \times 4x = - 2 \\ = > {4x}^{2} = - 2 \\ = > {x}^{2} = \frac{ - 2}{4} \\ = > {x}^{2} = \frac{ - 1}{2} \\ = > x = - + \sqrt{ \frac{1}{2} }


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