Question

please send me the answer​

Answer 1

Step-by-step explanation:

please see the attachment

Answer 2

Step-by-step explanation:

1)3xy-4y-3x+4

or, 3xy-3x-4y+4

= 3x(y-1) -4(y-1)

=,(y-1)(3x-4)

Ans: (y-1)(3x-4)

2) 16a²+88a+121

using identity (a+b)²= a²+2ab+b²

(4a)²+2.4a.11+11²

= (4a+11)²

=(4a+11)(4a+11)

Ans: (4a+11)(4a+11)

3)(a-5)²-(a-8)²

= (a-5+a-8)(a-5-a+8)

= (2a-13)(3)

=3(2a-13)

Ans: 3(2a-13)

4) (72)²-(68)²

= (72+68)(72-68)

= 140* 4

= 560

Ans:560