Помогите решить квадратные уравнения
1)x^2+7x+10=0
2)(2x+4)^2-11x-19
3)x^2+7x+10-0
4)(2x-4)^2-11x-19
1)x^2+7x+10=0
2)(2x+4)^2-11x-19
3)x^2+7x+10-0
4)(2x-4)^2-11x-19
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Answers & Comments
x1×x2=10/ x2=-2