OBLICZ Wartość bezwzględna [latex]| sqrt{7}-2|*|- sqrt{7}-2| |2-2 sqrt{3}|*|2+2 sqrt{3}| [/latex]

[latex](sqrt{7}-2)cdotleft|(-(sqrt{7}+2)) ight|=(sqrt{7}-2)cdot(sqrt{7}+2)=sqrt{7}^{2}-2^{2}=7-4=3[/latex] [latex]|-(2sqrt{3}-2)|cdot(2+2sqrt{3})=(2sqrt{3}-2)cdot(2sqrt{3}+2)=(2sqrt{3})^{2}-2^{2}=[/latex][latex]=12-4=8[/latex]

|√7 - 2| · |-√7 - 2| = (√7 - 2) · (√7 + 2) = (√7)² - 2² = 7 - 4 = 3 |2 - 2√3| · |2 + 2√3| = (2√3 - 2) · (2√3 + 2) = (2√3)² - 2² = 12 - 4 = 8