subtract the second polynomial from the first
(i)n3-5n2+6;n3+3n+8
(ii)2a+3a2-7;3a2-12+2a
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Answer:
Page No 42:
Question 1:
Add the following expression.
(i) 2a + b + 7 ; 4a + 2b + 3
(ii) 3x + y - 8; y + 4 -7x
(iii) 3x2 + 5x - 4 ; 8x - 2x2 + 11
(iv) 5
√
x
- 4
√
y
+ 2; 2
√
x
+ 7
√
y
- 5
ANSWER:
(i)
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
-
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