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= x + 22y
2) 6y - y² + y + 7y² - 10 = - y² + 7y² + 6y + y - 10
= 6y² + 7y - 10
3) 5 (a² + 6a + 2) - 4 (a² + 5a - 4)
= 5a² + 30a + 10 - 4a² - 20a + 16
= 5a² - 4a² + 30a - 20a + 10 + 16
= a² + 10a + 26
4) 9x (3x) (x + 2) + 3 (x² - 2x + 7)
= 27x² (x + 2) + 3x² - 6x + 21
= 27x³ + 54x² + 3x² - 6x + 21
= 27x³ + 57x² - 6x + 21
5) 2 (p³ - 2p² + 3p - 5) + 3 (2p³ - p² - p + 4)
= 2p³ - 4p² + 6p - 10 + 6p³ - 3p² - 3p + 12
= 2p³ + 6p³ - 4p² - 3p² + 6p - 3p - 10 + 12
= 8p³ - 7p² + 3p + 2
semoga membantu ya :)
2) 6y-y²+y+7y²-10 = -y²+7y²+6y+y-10 = 6y²+7y-10
3) 5a²+30a+10-4a²-20a+16 = 5a²-4a²+30a-20a+16
= a²+10a+16
4) 9x.(x+2) + 3.(x²-2x+7)
= 9x²+18x+3x²-2x+7
= 9x²+3x²+18x-2x+7
= 12x²+16x+7
5) 2.(p^3-2p+3p-5) + 3.(2p^3-p²-p+4)
= 2p^3-4p+6p-10+6p^3-3p²-3p+12
= 2p^4+6p^3-3p²-4p+6p-3p-10+12
= 8p^3-3p²-p+2