Question

(4x+3y) (4x-3y) Produto notável...

Answer 1

$(4x+3y)*(4x-3y)\\16x ^{2} -12xy+12xy-9y ^{2} \\16 x^{2} -9y ^{2}$

Answer 2

$(4x+3y) (4x-3y)\to \\\\ 16 x^{2} -12xy+12xy-9y^2\to \\\\16 x^{2} -9y^2$