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In the function f(x) = 4(x2 − 6x + ____) + 20, what number belongs in the blank to complete the square?
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4 votes
In the function f(x) = 4(x2 − 6x + ____) + 20, what number belongs in the blank to complete the square?

User Lloiser
by
5.5k points

2 Answers

4 votes

Answer:

9

Explanation:

I Promise :)

User Peter Moberg
by
6.5k points
0 votes
hello :
f(x) = 4(x2 − 6x + 3² - 3²____) + 20 = 4((x2 − 6x + 3²) - 3²____) + 20
= 4(x-3)² -36+20
f(x) = 4(x-3)² -16 (vertex form)

User Roel Harbers
by
6.5k points
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