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If f(x)=x²-18x+91, solve for x when f(x)=10​

If f(x)=x²-18x+91, solve for x when f(x)=10​
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If f(x)=x²-18x+91, solve for x when f(x)=10​

User Fergara
by
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1 Answer

2 votes

Answer:

x = 9

Explanation:

x²-18x+91 = 10

x²-18x+81 = 0

(x-9)(x-9)= 0

x = 9

check:

9² - 18 (9) + 91

81-162+91 = 10

User Larssg
by
7.9k points
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