Question

12. Simplify the following.
i. (x2 - y2) - (2x2 – 2y2)
ii. (a + b) - ] (2 + a - 2014
iii. [5c - (a + 2b)] - [3a - (b - 2c)}
iv. -5 (x + y) + 2 (2x - y) + 4x - 7
v. (5y2 + xy - 4x?) + (4y2 - 3x2 - 6xy)
+ (5xy + 7x2 - 9y2)
PESSI​

Answer 1

Step-by-step explanation:

3.1x^3-4x^(-2)-60/(x^2-1) 37. ... 2xy − y2. 5. x2 − 2x − 3. 7. 2y2 + 13y + 15 9. 4x2 − 12x + 9 11. x2 + 2 + 1/x2 ... 3x2 − 2x

Answer 2

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Didn't solve question 2 as it was unclear.