Answers

2016-07-13T12:39:13+08:00
A^2+b^2=50; a^2=50^2-b^2
A=a.b
1200=ab;
a=1200/b
1,440,00/b^2=2,500-b^2:
1,440,000=2,500b^2 -b^4;
b^4-2500b^2+1440000=0;
x=b^2:
x^2-2500x+1,440,000=0..
then solve for x?






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