Verified answer

[tex]\displaystyle\bf\\3x^{2} -3y^{2}=3\cdot(x^{2} -y^{2} )=3\cdot(x-y)\cdot(x+y)[/tex]

Ответ:

3х² - 3у² = 3(х² - у²) = 3(х - у)(х + у)

Объяснение: