Question

a²+(-b²+2a²)-(a²-b²) =​

Answer 1

Explicación paso a paso:

$a {}^{2} + ( - b {}^{2} + 2a {}^{2} ) - (a {}^{2} - b {}^{2} ) \\ = a {}^{2} - b {}^{2} + 2a {}^{2} - a {}^{2} + b {}^{2} \\ = 2a {}^{2}$