How do you write #y = x^2 - 9x - 10# into vertex form?

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How do you write #y = x^2 - 9x - 10# into vertex form?

↳Redirected from "Suppose that I don't have a formula for #g(x)# but I know that #g(1) = 3# and #g'(x) = sqrt(x^2+15)# for all x. How do I use a linear approximation to estimate #g(0.9)# and #g(1.1)#?"

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Answer 1 · 2018-04-18T17:41:26

#(y+121/4)=(x-9/2)^2#

Explanation:

#" "y=x^2-9x-10#

#" "y=x^2-2*9/2x+81/4-121/4#

#" "y+121/4=x^2-2*9/2x+81/4#

#" "(y+121/4)=(x-9/2)^2#

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How do you write #y = x^2 - 9x - 10# into vertex form?

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