From Förberedande kurs i matematik 1

Revision as of 09:55, 31 March 2008 (edit) Lina (Talk | contribs) (Ny sida: {{NAVCONTENT_START}} <center> Bild:2_1_3f.gif </center> {{NAVCONTENT_STOP}}) ← Previous diff		Current revision (08:39, 23 September 2008) (edit) (undo) Tek (Talk | contribs) m
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-	{{NAVCONTENT_START}}	+	Treating <math>4x</math> as one term, we can write
-	<center> [[Bild:2_1_3f.gif]] </center>	+
-	{{NAVCONTENT_STOP}}	+	{{Displayed math||<math> \qquad 16x^2+8x+1=(4x)^2 +2\cdot 4x +1 </math>}}
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		+	and since <math> y^2 +2y+1=(y+1)^2 </math> we obtain
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		+	{{Displayed math||<math> \qquad (4x)^2 +2\cdot 4x +1= (4x+1)^2 </math>.}}

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Current revision

Treating \displaystyle 4x as one term, we can write

\displaystyle \qquad 16x^2+8x+1=(4x)^2 +2\cdot 4x +1

and since \displaystyle y^2 +2y+1=(y+1)^2 we obtain

\displaystyle \qquad (4x)^2 +2\cdot 4x +1= (4x+1)^2 .