Question

Factorise 30m sq.-78mn +36n sq

Answer 1

Answer:

$\red { 30m^{2} - 78mn + 36n^{2}}$

$\green { = 6(m-3n)(5m+2n)}$

Step-by-step explanation:

30m² - 78 mn + 36n²

= 6( 5m² - 13mn + 6n²)

= 6( 5m² -15mn + 2mn + 6n² )

= 6[ 5m( m - 3n) + 2n( m + 3n) ]

= 6 (m-3n)(5m+2n)

Therefore.,

$\red { 30m^{2} - 78mn + 36n^{2}}$

$\green { = 6(m-3n)(5m+2n)}$

•••♪