a^2 + b^2 = a.b It is obvious that a=b=0 satisfies the equation above. But is there another pair of real numbers satisfying this equation?
If a and b are real numbers that satisfy the equation below, what is the value of a and b respectively?
Give positive numbers a, b and c are such that ab + bc + ca + abc = 4, What is the value of 1/a+2 + 1/b+2 + 1/c+2 = ?