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KOAL
11.07.2019 •
Mathematics
Let f(x) = x to the second power − 8x + 5. find f(−1).
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Ответ:
Hello!
To find the value of f(-1), you need to substitute -1 into each x variable and solve. Remember to use PEMDAS when simplifying.
f(x) = x² - 8x + 5 (substitute -1 for x)
f(-1) = (-1)² - 8(-1) + 5 (simplify the exponent)
f(-1) = 1 - 8(-1) + 5 (multiply)
f(-1) = 1 + 8 + 5 (add alike terms)
f(-1) = 14
Therefore, the value of f(-1) is 14.
Ответ:
2) 954 times 61 = 58,194