Question

Simplify: (

2

-

2+2xy+1) - (

2 +

2+4xy-5)

2) Find the difference: 2

3

4

- 1

5

6

3) Estimate the product of 578 × 369 by rounding off the first number downwards and the second number

upwards.

4) Find the sum of a-2b-3c+4d and 2a+4b-8c+6d​

Answer 1

Answer:

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