Разложите на множители: а) 3m-3n+m^2-n^2 б) a^2+5a-b^2+5b в) 9x^2-a^2+9x-3a г) p^2+5p-4q^2+10q

а ) 3 * m - 3 * n + m ^ 2 - n ^ 2 = 3 * ( m - n ) + ( m ^ 2 - n ^ 2 ) = 3 * ( m - n ) + ( m - n ) * ( m + n ) = ( m - n ) * ( 3 + m + n )б ) a ^ 2 + 5 * a - b ^ 2 + 5 * b = ( a ^ 2 - b ^ 2 ) + ( 5 * a + 5 * b ) = ( a - b ) * ( a + b ) + 5 * ( a + b ) = ( a + b ) * ( a - b + 5 )в ) 9 * x ^ 2 - a ^ 2 + 9 * x - 3 * a = ( ( 3 * x ) ^ 2 - a ^ 2 ) + ( 9 * x - 3 * a ) = ( 3 * x - a ) * ( 3 * x + a ) + 3 * ( 3 * x - a ) = ( 3 * x - a ) * ( 3 * x + a + 3 )г ) p ^ 2 + 5 * p - 4 * q ^ 2 + 10 * q = ( p ^ 2 - ( 2 * q ) ^ 2 ) + ( 5 * p + 10 * q ) = ( p - 2 * q ) * ( p + 2 * q ) + 5 * ( p + 2 * q ) = ( p + 2 * q ) * ( p - 2 * q + 5 )