Question

Пожалуйста срочноооооо

Answer 1

$1) \: 11 {m}^{2} - 11 {n}^{2} = 11( {m}^{2} - {n}^{2} ) = 11(m - n)(m + n)$

$2) \: 5 {a}^{2} - 20 {x}^{2} = 5( {a}^{2} - 4 {x}^{2} ) = 5(a - 2x)(a + 2x)$

$3) \: 3 {m}^{2} - 6m + 3 = 3( {m}^{2} - 2m + 1) = 3 {(m - 1)}^{2}$