Question

6. On subtracting 18xy - 6x + 2y from 8xy - 4x + y,
we get
(A) 26xy - 10x + 3y (B) 10xy - 2x + y
(C) - 10xy + 2x -y (D) xy + x + y.

7. Given expressions are:7pq,- 6p+8q, 3pq - 12p+94.
Adding these, we get
(A) 10pg - 10p - 109 (B)- 10pg + 10p + 109
(C) 10pq + p +9
(D) 10pq - 18p +179.
8. From the sum of 3a2 + 2 and 7 - 2a + a2,
subtracting the sum of 3 + 2a - a2 and 4a2 - 2,
we get
(A) a2 - 4a +8 (B)-22 + 4a + 8
(C) a2 + 4a - 8 (D) - a2 - 4a - 8. ​

Answer 1

Answer:

• 6.C. -10xy+2x-y
• 7.
• 8.A. a²-4a+8

Answer 2

Answer:

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