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dabboy
01.03.2020 •
Mathematics
Solve by completing the square :
4x^2-12x+7=0
Solved
Show answers
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Ответ:
Step-by-step explanation:
we have
step 1
Group terms that contain the same variable, and move the constant to the opposite side of the equation
step 2
factor the leading coefficient
step 3
Complete the square. Remember to balance the equation by adding the same constants to each side
simplify
step 4
Rewrite as perfect squares
step 5
take square root both sides
Convert 1.5 in a fraction number
Ответ:
Divide the miles by the hours
141/3=47
205/5=41
97/2=48.5
172/4=43
97 miles in 2 hours
Step-by-step explanation: