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= 9p²+3p²+3-7
= 12p²-4
b. (4+6a²-5ab)+(-2ab+a²-3)
= 6a²+a²-5ab-2ab+4-3
= 7a²-7ab+1
semoga membantu :)
3p² - 7
______ +
12p² - 4
b) 4 + 6a² - 5ab
-3 + a² - 2ab
__________ +
1 + 7a² - 7ab