Question

Упростите выражение 2
4x -y
y² (2x
2
y) ²
2x-y

Answer 1

Ответ:

Объяснение:

4x²-y²-(2x-y)²=4x²-y²-(4x²-4xy+y²)=4x²-y²-4x²+4xy-y²=4xy-2y²=2y(2x-y)

Answer 2

$\displaystyle\bf\\4x^{2} -y^{2} -(2x-y)^{2} =4x^{2} -y^{2} -(4x^{2} -4xy+y^{2} )=\\\\\\=4x^{2} -y^{2} -4x^{2} +4xy-y^{2} =4xy-2y^{2} =2y\cdot(2x-y)$