Which of the binomials below is a factor of this trinomial? 3x2 + 18x - 21
2 answers:
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Answer:
x = 2 - 5, x = 2 + 5
Step-by-step explanation:
x² - 4x = 71
to complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 2)x + 4 = 71 + 4
(x - 2)² = 75 ( take the square root of both sides )
x - 2 = ± = ± 5
( add 2 to both sides )
x = 2 ± 5
then
x = 2 - 5 , x = 2 + 5
Answer:
Step-by-step explanation:
Answer/Step-by-step explanation:
Year = x
Weight (kg) = y
Rate of change between 2010 and 2011 =
Where,
Plug in the values
Rate of change = -5kg per year
This means that there was a decrease in the weight of the winning dog form 2010 to 2011 by 5 kilograms