Answer:
1)-2y-2z
2)-3x ^ 3 - 4x ^ 2 + 7x + 9
3)3x ^ 2 - 2y ^ 2 + 2xy
4)−5−4z^2−3yz−3y^2
5)m−6n+4p
Step-by-step explanation:
1)5x+3y-8z+2y-3x+5z+z-7y-2x
= 5x-3x-2x+3y+2y-7y-8z+5z+z
= -2y-2z
2)4x ^ 3 - 2x ^ 2 + 5x - 1 + 8x + x ^ 2 - 6x ^ 3 + 7 - 6x + 3 - 3x ^ 2 - x ^ 3
= 4x ^ 3- x ^ 3- 6x ^ 3- 2x ^ 2+ x ^ 2- 3x ^ 2 + 5x+ 8x - 6x + 3- 1+ 7
=-3x ^ 3 - 4x ^ 2 + 7x + 9
3)2x ^ 2 + 3xy - 3y ^ 2 + x ^ 2 - xy + y ^ 2
=3x ^ 2 - 2y ^ 2 + 2xy
4) 2 - 3z ^ 2 + 5yz + 7y ^ 2 - 8 + z ^ 2 - 6yz - 9y ^ 2 + 1 - 2z ^ 2 - 2yz - y ^ 2
=−5−4z^2−3yz−3y^2
5)2m - 3n + 5p + 2m + n - 2p - 3m - 4n + p
=m−6n+4p
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Answers & Comments
Answer:
1)-2y-2z
2)-3x ^ 3 - 4x ^ 2 + 7x + 9
3)3x ^ 2 - 2y ^ 2 + 2xy
4)−5−4z^2−3yz−3y^2
5)m−6n+4p
Step-by-step explanation:
1)5x+3y-8z+2y-3x+5z+z-7y-2x
= 5x-3x-2x+3y+2y-7y-8z+5z+z
= -2y-2z
2)4x ^ 3 - 2x ^ 2 + 5x - 1 + 8x + x ^ 2 - 6x ^ 3 + 7 - 6x + 3 - 3x ^ 2 - x ^ 3
= 4x ^ 3- x ^ 3- 6x ^ 3- 2x ^ 2+ x ^ 2- 3x ^ 2 + 5x+ 8x - 6x + 3- 1+ 7
=-3x ^ 3 - 4x ^ 2 + 7x + 9
3)2x ^ 2 + 3xy - 3y ^ 2 + x ^ 2 - xy + y ^ 2
=3x ^ 2 - 2y ^ 2 + 2xy
4) 2 - 3z ^ 2 + 5yz + 7y ^ 2 - 8 + z ^ 2 - 6yz - 9y ^ 2 + 1 - 2z ^ 2 - 2yz - y ^ 2
=−5−4z^2−3yz−3y^2
5)2m - 3n + 5p + 2m + n - 2p - 3m - 4n + p
=m−6n+4p