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spayn [35]
3 years ago
9

Pure mathematicsssss

Mathematics
1 answer:
stepan [7]3 years ago
3 0

Answer:

(i) a = 2

   b = -1

   c = -1

(ii) x= 1

Step-by-step explanation:

<u>Step 1: Factorise</u>

f(x) = 2(x^{2} -2x+\frac{1}{2})  

<u>Step 2: Use the complete square method. </u>

f(x)=2(x^{2} -2x+(\frac{-2}{2})^{2} + \frac{1}{2}  - (\frac{-2}{2})^{2} )  

<u>Step 3: Have it</u><u> </u><u>to </u>a(x+b)^{2} +c

f(x)=2((x-1)^{2} -\frac{1}{2} )\\ = 2(x-1)^{2} -1

<u>Line of symmetry: </u> 

To find line of symmetry, we use -b/2a formula.

Based from 2x^{2} -4x+1:

a=2, b=-4

-b/2a = -(-4)/2(2) = 1

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