# Are you sure you gonna integrate?

Calculus Level 4

What is the area bounded by the equation

$x^4 + y^4 = x^2 + y^2 ?$

The answer can be expressed as $$a \sqrt{b} \pi$$, where $$a$$ is an integer and $$b$$ is a squarefree integer. Enter your answer as $$a + b$$.

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