For now I don't know the answer to this problem of yours.
Answer:
10x³ - 7x² - 7x + 4
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
(10x³ - 3x - 5) - (7x² + 4x - 9)
<u>Step 2: Simplify</u>
- Distribute negative: 10x³ - 3x - 5 - 7x² - 4x + 9
- Combine like terms (x): 10x³ - 7x² - 7x - 5 + 9
- Combine like terms (Z): 10x³ - 7x² - 7x + 4
6.89(1.21) = 8.3369 rounds to 8.34 <==
or u could also do it this way...
6.89 + 0.21(6.89) = 6.89 + 1.4469 = 8.3369 rounds to 8.34 <==