Find the sum: (3x^2 + 5x − 8) + (5x^2 − 13x − 5)
2 answers:
Answer:
C
Step-by-step explanation:
Given
(3x² + 5x - 8) + (5x² - 13x - 5) ← remove the parenthesis
= 3x² + 5x - 8 + 5x² - 13x - 5 ← collect like terms
= 8x² - 8x - 13 → C
Answer:
C. 
Step-by-step explanation:
All you are doing is combining like-terms:
![\displaystyle 8x^2 - 8x - 13 = [3x^2 + 5x - 8] + [5x^2 - 13x - 5]](https://tex.z-dn.net/?f=%5Cdisplaystyle%208x%5E2%20-%208x%20-%2013%20%3D%20%5B3x%5E2%20%2B%205x%20-%208%5D%20%2B%20%5B5x%5E2%20-%2013x%20-%205%5D)
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The answer to the problem is 24
Answer:
4/27
Step-by-step explanation:
F(x) = 4(1/3)^x
Let x =3
F(3) = 4(1/3)^3
Exponents first
F(3) = 4 * 1/27
Then multiply
f(3) = 4/27
