Предмет: Математика, автор: NE7SPISIVAT

ОГЭ ПРОБНИК , НУЖНА ПОМОЩЬ
(x^2 -25)^2 + (x^2 + 3x -10)^2 = 0

Ответы

Автор ответа: Piramit
0
если сумма квадратов равна нулю, значит каждое слагаемое равно нулю.
x^2-25 = 0
x^2=25
x = +-5
и
x^2+3x-10=0
D = 9+40=49
-3+-7 / 2 => x = -5 и x = 2 
Ответ: х1 = -5, х2= 5, х3 = 2.
Автор ответа: NE7SPISIVAT
0
Спасибо !
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