Notes
Completing The Square
Content of the notes (1)
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Completing The Square
You should complete the square if you cannot factorise.
x²+ax+b = (x+1/2a)²+(b-1/2a²)
e.g.
x²+8x+21 = (x+4)²+5
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Notes
Completing The Square
You should complete the square if you cannot factorise.
x²+ax+b = (x+1/2a)²+(b-1/2a²)
e.g.
x²+8x+21 = (x+4)²+5