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Extra points!!no links tho

given the function f(x)=x^2+10x+20

a.state whether the vertex represents a maximum or a minimum point for your function. explain your answer

b.rewrite f(x) in vertex form by completing the square

User Tapas Pal
by
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1 Answer

4 votes

Answer:

a. the vertex represents a minimum point

b. f(x) = (x + 5)² - 5

Explanation:

a.

a = 1 > 0 ← that means the parabola opens up, so the vertex is minimum of the function

b.


f(x)=x^2+10x+20\\\\f(x)=\underline{x^2+10x+25} - 25+20\\\\f(x)=(x+5)^2-5

User Snovity
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