2a^3y+4ay^2-5a^2y^3=
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Step-by-step explanation:
2a + b + 7
4a + 2b + 3
---------------------
6a + 3b + 10
(ii)
3x + y - 8
- 7x + y + 4
---------------------
-4x + 2y - 4
(iii)
3x2 + 5x - 4
-2x2 + 8x + 11
---------------------
x2 + 13x + 7
(iv)
5
√
x
- 4
√
y
+ 2 2
√
x
+ 7
√
y
- 5 7
√
x
+3
√
y
- 3
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