samara49
13.12.2019 •
Mathematics
Complete the square to factor x^2 +10x=-8
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Ответ:
Step-by-step explanation:
X² + 10x = -8
add to both side the square of half the coefficient of X which is 5²
X² + 10x + (10/2)² = -8 + (10/2)²
X² + 5² = -8 + 5²
( X + 5 )² = -8 + 25
(X + 5)² = 17
X + 5 = +- √17
Therefore, X = -5 +- √17.
X = -5 + √17 , -5 - √17.
Ответ:
Step-by-step explanation: nope sorrry