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sia87
@sia87
August 2022
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(2x+5)^2+(5x-3)^2=75+2x найти корни
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aliyas1
4х²+20х+25+25х²-30х+9=75+2х
4х²+20х+25+25х²-30х+9-75-2х=0
29х²-12х-41=0
D=12² - 4×29×(-41)=4900=70²
x1=12+70/58=82/58=1 целая 12/29
x2=12-70/58=-1
Ответ: (-1; 1 целая 12/29)
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Answers & Comments
4х²+20х+25+25х²-30х+9-75-2х=0
29х²-12х-41=0
D=12² - 4×29×(-41)=4900=70²
x1=12+70/58=82/58=1 целая 12/29
x2=12-70/58=-1
Ответ: (-1; 1 целая 12/29)