10 points

help i’ll give brainliest!

in the function f(x) = 5(x^2 - 4x + __) + 15, what number belongs in the blank to complete the square?

10 points help ill give brainliest in the function fx 5x2 4x 15 what number belongs in the blank to complete the square class=

Respuesta :

The correct answer is 4
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