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# How do you complete the square on this question? watch

1. Write y=2x^2 -5x +10 in the form
y=a(x+b)^2 + c
2. tip: put the rest of the equation into a bracket with 2 outside and try and solve from there
3. Your coefficient for your ‘a’ value will be placed outside the brackets. From here try to factorise in the form it asks it to be given in
4. Or just expand the completed square form to get and compare with to obtain the values of a,b,c
5. first step:
2(x^2-5/2x)+10
second step:
2(x^2-5/2x +5/4^2 -5/4^2) +10
third step:
2[(x-5/4)^2 -5/4^2]+10
fourth step:
2(x-5/4)^2 +13.125

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Updated: February 16, 2018
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