Evaluate algebraic expression 2a2 +x2-y2
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2*(a*a) + x*x + y*y
= 2*a^2 + x^2 + y^2
= 2a^2 + x^2 + y^2
^2 = raise to the power of 2 OR square
= 2*a^2 + x^2 + y^2
= 2a^2 + x^2 + y^2
^2 = raise to the power of 2 OR square
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