Answer:
The sentence that we must complete is:
"Quien _________ dos lenguas vale por dos."
A rough translation of this is:
"Who ____ two languajes, is worth for two"
The word that can complete the sentence is "speak" or "habla" in Spanish, the complete sentence is:
Quien habla dos lenguas vale por dos.
Answer:
El otro polinomio es:
2x² + 4xy -3x - y²
Explanation:
(3x - 4x² + y²) + a = -2x² + 4xy
a = -2x² + 4xy - (3x - 4x² + y²)
a = -2x² + 4xy - 3x + 4x² - y²
a = -2x² + 4x² + 4xy - 3x - y²
a = 2x² + 4xy - 3x - y²