Предмет: Математика, автор: Аноним

решите иррациональное уравнение √x^4+19=10 пожалуйста помогите!!!!

Ответы

Автор ответа: ShacEd

так как $x^{4}+19$ всегда > 0 и в правой части стоит неотрицательное число можно свободно возвести обе части в квадрат чтобы избавится от корня
$x^{4} +19=100 \ x^{4} = 81\ x_{1} = 3\ x_{2} = -3$

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