Is it a Function or a Vector?

Calculus Level pending

Let \(f\) and \(g\) be functions such that \(f(x)=(2x)\hat{i} + (x^2)\hat{j}\) and \(g(x)=(x^2)\hat{i}+(2x)\hat{j}\). If the sum of real solutions of the ecuation \(f(x)=g(x)\) is \(a\), find \(a-1\)

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