3. Add the following:
(i) x-2y+3xy, Y-3x+4yz, Z + 4x +8xz
(ii
) 3x2y2 - 4xy + 4, 6+8xy - 4x?y?
(iii) ab-bc, bc-ca, ca - ab
(iv)
12 + m2, m? +n?, n+12,21m+2mn+2nl
(v) 8xy +6yz – 4zx, 5yz +10zx - 5y,
- 4x2 +6x -3xy
(vi) 6x2 – 3x + 4, 8x -9, 15x2 -11x +10.
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Answer: 1)x-2y+3xy + y-3x+4yz + z + 4x + 8xz (First put the similar ones in line)
x-3x + 4x - 2y+y + 3xy + 4yz + 8xz + z
2x - y + 3xy + 4yz + xz + z
2) =(3x²y²-4xy+4)+(6+8xy-4x²y²)
=3x²y²-4xy+4+6+8xy-4x²y²
=-x²y²+4xy+10
Step-by-step explanation:
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