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Gwar [14]
3 years ago
15

Three pens cost £1.80 total. Work out the cost in 1 pen. Give your answer in pence

Mathematics
1 answer:
alexira [117]3 years ago
4 0
Wlgptmdgns33wlgptmdgns33
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What number should be added to both sides of the equation to complete the square x^2+3x=6
Allisa [31]
Take half of the coefficient of x:  It is 3, and half that is 3/2.


Then   <span>x^2+3x=6  becomes:

</span><span>           x^2+3x + (3/2)^2 =6 + (3/2)^2, and

             (x+3/2)^2 = 6 + 9/4

You were not asked to solve the equation, but why not do it for the practice?

</span>Solve (x+3/2)^2 = 6 + 9/4 for x.  There will be 2 values.
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