Ответы на вопрос:
Объяснение:
x_{2} = -15\\ x+30 = 0 => x_{3} = -30" class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=2x%28x%2B15%29%5E%7B2%7D%20-%20x%5E%7B2%7D%20%28x%2B15%29%20%3D%200%5C%5C%28x%2B15%29%282x%28x%2B15%29%20-%20x%5E%7B2%7D%20%29%20%3D%200%5C%5C%28x%2B15%29%282x%5E%7B2%7D%20%2B30x%20-%20x%5E%7B2%7D%20%29%20%3D%200%5C%5C%28x%2B15%29%28x%5E%7B2%7D%20%2B30x%29%20%3D%200%5C%5Cx%28x%2B15%29%28x%2B30%29%20%3D%200%5C%5C%5C%5Cx_%7B1%7D%20%20%3D%200%5C%5Cx%2B15%20%3D%200%20%3D%3E%20x_%7B2%7D%20%3D%20-15%5C%5C%20x%2B30%20%3D%200%20%3D%3E%20x_%7B3%7D%20%3D%20-30" title="2x(x+15)^{2} - x^{2} (x+15) = 0\\(x+15)(2x(x+15) - x^{2} ) = 0\\(x+15)(2x^{2} +30x - x^{2} ) = 0\\(x+15)(x^{2} +30x) = 0\\x(x+15)(x+30) = 0\\\\x_{1} = 0\\x+15 = 0 => x_{2} = -15\\ x+30 = 0 => x_{3} = -30">
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