Question

the expression 4x2-12xy+9y2 is an example of:

Answer 1

Answer:

$by \: using \: \: x ^{2} - 2xy + y ^{2} = (x - y) ^{2} \\ 4x ^{2} - 12xy + 9y ^{2} = (2x - 3y) ^{2} \\ i \: hope \: it \: is \: helpfull \: for \: you........$