3 years ago

In the function f(x) = 5(x2 − 4x + ) + 15, what number belongs in the blank to complete the square?

Mathematics

1 answer:

FromTheMoon [43]3 years ago

6 0

Answer:

Step-by-step explanation:

$f(x) = 5( {x}^{2} - 4x + ) + 15 \\ = 5( {x}^{2} - 4x + 4) + 15 \\ = 5( {x}^{2} - 4x + {2}^{2} ) + 15 \\ = 5 (x - 2)^{2} + 15$

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