Si te sirvió dale corona para seguir ayudando.
Forma horizontal
a) (5x² - 7x - 8) + (-3x - 9) = 5x² - 10x - 17
Forma vertical
5x² - 7x - 8
-3x - 9
----------------
5x² - 10x - 17
b) (4a² + 2ab + 5b) + (6a² - 7ab) = 10a² - 5ab + 5b
4a² + 2ab + 5b
6a² - 7ab
----------------------
10a² - 5ab + 5b
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Verified answer
Si te sirvió dale corona para seguir ayudando.
Forma horizontal
a) (5x² - 7x - 8) + (-3x - 9) = 5x² - 10x - 17
Forma vertical
5x² - 7x - 8
-3x - 9
----------------
5x² - 10x - 17
Forma horizontal
b) (4a² + 2ab + 5b) + (6a² - 7ab) = 10a² - 5ab + 5b
Forma vertical
4a² + 2ab + 5b
6a² - 7ab
----------------------
10a² - 5ab + 5b