How to solve this nice math radical Exponential algebra problem | Olympiad Question | x=?

preview_player
Показать описание
#exponents#olympiad#rational #maths #algebra #integral#rational
math olympiad algebra problem,nice algebra problem,math olympiad questions,math olympiad problems,math olympiad algebra,math olympiad question,math olympiad preparation,math olympiad,math olympiad problem,algebra problem,math problems,algebra problems,learn how to solve exponential equation quickly,olympiad math problems,olympiad mathematics,algebra,a nice algebra problem,algebra math olympiad,viral math olympiad problem
Рекомендации по теме
Комментарии
Автор

a=³√(x+49);b=³√(x-49);
a-b=2; a³-b³=49+49=98;
(a-b)³=a³-b³-3ab(a-b);
2³=98-3ab(2);=>ab=15;
a-b=2; =>(b+2)b=15;
b²+2b-15=0;
(b+5)(b-3)=0; b=-5 or 3;
b³=-125 or 27=x-49;
x= -76 or 76; verified✓

ShriH-do