Ответ:
Объяснение:
[tex]9x^{2} +16x-4=0\\9x^{2} +18x-2x-4=0\\9x(x+2)-2(x+2)=0\\(9x-2)(x+2)=0\\x+2=0\\x_{1}=-2\\9x-2=0\\9x=2\\x_{2}=\frac{2}{9}[/tex]
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Ответ:
Объяснение:
[tex]9x^{2} +16x-4=0\\9x^{2} +18x-2x-4=0\\9x(x+2)-2(x+2)=0\\(9x-2)(x+2)=0\\x+2=0\\x_{1}=-2\\9x-2=0\\9x=2\\x_{2}=\frac{2}{9}[/tex]