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3 years ago

Rewrite the function by completing the square f(x)=x^2-4x-26

Mathematics

1 answer:

leonid [27]3 years ago

8 0

Answer:

(x - 2)² - 30

Step-by-step explanation:

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 4x

f(x) = x² + 2(- 2)x + 4 - 4 - 26 = (x - 2)² - 30

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a = ( 0 , 7 ) & b = ( 3 , 1 )

First need to find the slope using the following equation :

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$y - y(0) = m \times ( \: x - x(0) \: )$

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I choose point (( a )) to put in the equation.

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