Предмет: Математика, автор: dimashovvip

Срочно помоги с последним ​

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Ответы

Автор ответа: Аноним
0

5х² - 12х + 7=0

ax² + bx + c=0

Для четных b

D/4=(b/2)² - a*c

D/4=(12/2)² - 5*7=36 - 35=1=1²

x1,2=[(-b/2)±√(D/4)] / a=

(6±1)/5.

x1=7/5

x2=1.

Ответ: 1 и 7/5.

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