Beautiful yet puzzling equations!!!
Algebra
Level
4
if (x-y)(x+2y)(2x+y) = 20 AND x^2 + xy + y^2 = 7
then find positive integral value of x assuming y is also positive.Please dont guess
The answer is 2.
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1 solution
x 2 + x y + y 2 = 7 it means that x 2 < 7 so x = 1 or 2 put x = 1 and you will get y > x put x = 2 you will get y = 1