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hjlf
3 years ago
12

Can someone complete the square

Mathematics
1 answer:
pshichka [43]3 years ago
7 0
To do these, start by looking at the "b" value -6.
divide it by 2

-6/2 = -3

now square this number

(-3)^2 = 9

this is what you need for the "c" value

there is only a 5 for the c value so add 4 to both sides of the equation. ( +4 = +4)

y +4 = x^2 -6x +5 +4
y +4 = x^2 -6x +9
y +4 = (x -3)^2
y = (x -3)^2 - 4

vertex ( 3, -4) upwards facing like a bowl, because the "a" value is positive. So the vertex is the minimum, lowest point on the graph.


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Explain how you could use either of two operation to solve exercise 10.
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You want to know the factor by which 3 2/3 is multiplied to get 7 1/3.

1. You can estimate that it is 2 from 7/3 ≈ 2, then check by multiplication to see if that is right.
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2. You can divide 7 1/3 by 3 2/3 to see what the factor is.
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3. You could see how many times you can subtract 3 2/3 from 7 1/3.
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___
We have shown methods using multiplication, division, subtraction, addition. Take your pick.
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Step-by-step explanation:

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