Question

256x²+² - x²y² + 49y²+²

Answer 1

$\\ \sf\longmapsto 256x^2y^2-x^2y^2+49y^2x^2$

$\\ \sf\longmapsto 256x^2y^2-x^2y^2+49x^2y^2$

$\\ \sf\longmapsto (256-1+49)x^2y^2$

$\\ \sf\longmapsto 304x^2y^2$