Answer:
a: -4p² + 5q² - 4pq - 2
b: -3x + 3y
Explanation:
When we combine like terms, we get:
(-6p²+8q² - 2pq- 5) + ( 2p² -3q² -2pq+3) = -4p² + 5q² - 4pq - 2
Therefore, the simplified expression is -4p² + 5q² - 4pq - 2.
Next:
(5x+6y)+ (-8x -3y) = 5x - 8x + 6y - 3y
Combining like terms gives us:
5x - 8x + 6y - 3y = -3x + 3y
Therefore, the simplified expression is -3x + 3y.