pinkpearl20
19.11.2019 •
Mathematics
What property is used to solve 8*(14+7) = (8*14) + (8*7)
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Ответ:
(x + 3)² + 11
Step-by-step explanation:
Given
x² + 6x + 20
To complete the square
add/subtract ( half the coefficient of the x- term )² to x² + 6x
x² + 2(3)x + 9 - 9 + 20
= (x + 3)² + 11