Question

plz solve this fast i need this urgently
$4 {x}^{2} - 12xy + 9 {y}^{2} - 25$
plz factorise this
​

Answer 1

Answer:

answer is in the photo.......

Answer 2

Answer:

i)25−4x

2

−12xy−9y

2

=25−(4x

2

+12xy+9y

2

)

=5

2

−((2x)

2

+2×2x×3y+(3y)

2

)

=5

2

−(2x+3y)

2

=(5+2x+3y)(5−(2x+3y))

=(5+2x+3y)(5−2x−3y)