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Search results
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Mathematics: Post your doubts here!
Its damn easy Learn it from this site :) http://examsolutions.net/maths-revision/core-maths/algebra-and-functions/quadratics/completing-the-square/tutorial-1.php- Thought blocker
- Post #12,073
- Forum: A-Levels
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Mathematics: Post your doubts here!
what is this all ? O.o Explain it to me please. :/- Thought blocker
- Post #12,067
- Forum: A-Levels
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Mathematics: Post your doubts here!
What is this O.o :(- Thought blocker
- Post #12,065
- Forum: A-Levels
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Mathematics: Post your doubts here!
2x^2− 12x + 13 We have to do complete square method. 10i) so, 2(x^2 -6x) +13 2(x-3)^2+13 2(x^2-6x+9) +13 2x^2-12x+18 (to remove 18 subtract it from 18 and add 13) 2(x-3)^2 -5 hence, a = 2 b = -3 and c = -5 :) 10ii) graph has line of symmetry on x = 3 so you'll think that A should be...- Thought blocker
- Post #12,062
- Forum: A-Levels
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Mathematics: Post your doubts here!
This 7 is easy, see my steps :) THAT REALLY WORKS. Expand the brackets, and multiply it, then check the coff. of X^2, add them and as given in question keep it equal to 48 hence a = 3 :)- Thought blocker
- Post #12,029
- Forum: A-Levels
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Mathematics: Post your doubts here!
What was the question ? O.o- Thought blocker
- Post #12,024
- Forum: A-Levels
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Mathematics: Post your doubts here!
Its the only way I do it, if you get more accurate way, do tell me :)- Thought blocker
- Post #12,018
- Forum: A-Levels
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Mathematics: Post your doubts here!
Take very far points on x axis and connect 'em :)- Thought blocker
- Post #12,014
- Forum: A-Levels