Question

add the following expressions :-
1. 7p² - 4p²q + 8q², 5q² - 2p² + 6p²q and 3p²q + 10p²
2. 9x² - 7x + 5 , -14x² - 6 + 15x and 20x² + 40x - 17
3. -m² - 3mn + 3n² + 8 , 3m² - 5n² - 3 + 4mn and -6mn + 2m² - 2 + n²
Please answer these questions​

Answer 1

Step-by-step explanation:

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