Diskussion:Repetera kvadreringsreglerna: Skillnad mellan sidversioner
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Hakan (diskussion | bidrag) (→Facit) |
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| Rad 16: | Rad 16: | ||
7. (a+bx)<sup>2</sup> = '''a<sup>2</sup>+2abx+b<sup>2</sup>x<sup>2</sup>''' | 7. (a+bx)<sup>2</sup> = '''a<sup>2</sup>+2abx+b<sup>2</sup>x<sup>2</sup>''' | ||
<br> | <br> | ||
8. (0.4a+3x)<sup>2</sup> = '''0.16a<sup>2</sup>+2. | 8. (0.4a+3x)<sup>2</sup> = '''0.16a<sup>2</sup>+2.4ax+9x<sup>2</sup>''' | ||
<br> | <br> | ||
9. (3y-2x<sup>2</sup>)<sup>2</sup> = '''9y<sup>2</sup>-12x<sup>2</sup>y+4x<sup>4</sup>''' | 9. (3y-2x<sup>2</sup>)<sup>2</sup> = '''9y<sup>2</sup>-12x<sup>2</sup>y+4x<sup>4</sup>''' | ||
<br> | <br> | ||
Nuvarande version från 7 februari 2012 kl. 10.27
Facit
1. (1+x)2 = 1+2x+x2
2. (2+2x)2 = 4+8x+4x2
3. (2-3x)2 = 4-12x+9x2
4. (8+9x)2 = 64+144x+81x2
5. (0.5-10x)2 = 0.25-10x+100x2
6. (a-b)2 = a2-2ab+b2
7. (a+bx)2 = a2+2abx+b2x2
8. (0.4a+3x)2 = 0.16a2+2.4ax+9x2
9. (3y-2x2)2 = 9y2-12x2y+4x4