coolkitty35
30.06.2020 •
Mathematics
Which expression represents f(x) – g(x)?
f(x) = 2x2 – 3x + 4
g(x) = x2 – 4x – 5
A. x2 – 7x – 1
B. x2 – 7x + 9
C. x2 + x – 1
D. x2 + x + 9
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Ответ:
A
Step-by-step explanation:
f(x) – g(x)
Set up the expression.
2x² - 3x + 4 - x² - 4x - 5
Add or subtract the like terms.
2x² - x² -3x - 4x + 4 - 5
x² - 7x -1
Ответ: