Question

factorise the following​

Answer 1

Answer:

(xy - 2)(xy - 5) and (7x - 2y)(3x - y)

Step-by-step explanation:

$For first equation,\\\\x^{2}y^{2} - 7xy + 10 \\= x^{2}y^{2} - 5xy - 2xy + 10\\= xy( xy - 5 ) - 2( xy - 5 )\\= ( xy - 2)( xy - 5)\\\\For Second Equation,\\\\21x^{2} - 13xy + 2y^{2}\\= 21x^{2} - 7xy - 6xy + 2y^{2}\\= 7x( 3x -y ) - 2y ( 3x - y )\\= ( 7x - 2y )( 3x - y )$