1.) 5 n-15 = 5mn(m) - 5mn(3n)
= 5mn(m - 3n)
2.) 4 - 12
= 4 - 4 (3)
= 4 ( - 3)
3.) 12 - 16
= 4 (3 ) - 4 (4 )
= 4 (3 - 4 )
1.)5mn(m - 3n)
2.) 4 ( - 3)
3.) 4 (3 - 4 )
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Answers & Comments
1.) 5
n-15
= 5mn(m) - 5mn(3n)
= 5mn(m - 3n)
2.) 4
- 12 ![\times \times](https://tex.z-dn.net/?f=%5Ctimes)
= 4![\times \times](https://tex.z-dn.net/?f=%5Ctimes)
- 4
(3)
= 4![\times \times](https://tex.z-dn.net/?f=%5Ctimes)
( ![\times \times](https://tex.z-dn.net/?f=%5Ctimes)
- 3)
3.) 12
- 16
![{b}^{2} {b}^{2}](https://tex.z-dn.net/?f=%7Bb%7D%5E%7B2%7D)
= 4
(3
) - 4![{a}^{2} {a}^{2}](https://tex.z-dn.net/?f=%7Ba%7D%5E%7B2%7D)
(4
)
= 4
(3
- 4
)
1.)5mn(m - 3n)
2.) 4![\times \times](https://tex.z-dn.net/?f=%5Ctimes)
( ![\times \times](https://tex.z-dn.net/?f=%5Ctimes)
- 3)
3.) 4
(3
- 4
)