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Kidmarkham4475
22.01.2021 •
Mathematics
Please Help!
The areas of two rectangles can be represented by the functions shown.
Which function represents the difference in the areas, h(x) = f(x) – g(x)?
h(x) = 4x2 – 4x – 11
h(x) = 4x2 – 4x + 11
h(x) = –4x2 + 4x + 11
h(x) = 4x2 – 4x – 9
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Ответ:
B. h(x) = 4x² - 4x + 11
Step-by-step explanation:
Given:
f(x) = 5x² - 2x + 1
g(x) = x² + 2x - 10
Required:
h(x) = f(x) - g(x)
Solution:
h(x) = (5x² - 2x + 1) - (x² + 2x - 10)
= 5x² - 2x + 1 - x² - 2x + 10 (distributive property)
Collect like terms
= 5x² - x² - 2x - 2x + 1 + 10
h(x) = 4x² - 4x + 11
Ответ:
Step-by-step explanation:
number 2 is 180 and number 3 is 165