2x²+6x=0
[tex]2x {}^{2} + 6x = 0[/tex]
a = 2
b = 6
c = 0
[tex]x = \frac{ - b \: ± \sqrt{ {b}^{2} } - 4ac }{2a} [/tex]
[tex]x = \frac{ - 6 \: ± \sqrt{ {6}^{2} - 4(2)(0)} }{2(2)} [/tex]
[tex]x = \frac{ - 6 \: ±\sqrt{36 - 0} }{4} [/tex]
[tex]x = \frac{ - 6 \: ± \sqrt{36} }{4} [/tex]
[tex]x = \frac{ - 6 \: ± \: 6 }{4} [/tex]
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[tex] {x}^{1} = \frac{ - 6 + 6}{4} [/tex]
[tex] {x}^{1} = \frac{0}{4} [/tex]
[tex] {x}^{1} = 0[/tex]
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[tex] {x}^{2} = \frac{ - 6 - 6}{4} [/tex]
[tex] {x}^{2} = \frac{ - 12}{4} [/tex]
[tex] {x}^{2} = - 3[/tex]
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・:。@justfebyy・:三
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