liubitsaghn2145
24.05.2021 •
Mathematics
Level 3: What is the sum of the polynomials?
(-7x2 – 3x4 – 5) + (-3x4 +3+9x²)
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Ответ:
Remove parentheses.
−7x²−3
−5−3
+3+9x²
Add −7x² and 9x² .
2x²−3
−5−3
+3
Subtract 3
from −3
.
2x²−6
−5+3
Add −5 and 3.
2x²−6
−2
Step-by-step explanation:
Ответ:
The swimmer descends 3 meters, so we subtract 3 or add -3. Thus, the answer is:
-5 + (-3)