Question

х^2+(5-x)(5+x)=100x. помогите

Answer 1

х^2+(5-х)*(5+х)=100х
х^2+25+5х-5х-х^2=100х
25=100х
х=0.25
проверка
0.25^2+25+5*4-5*4-0.25^2=100*0.25
25=25

Answer 2

x^2+25-x^2=100x
25=100x
x=0,25