Odpowiedź:
Szczegółowe wyjaśnienie:
[tex](8x - 6\sqrt{2} )^{2} = (8x)^{2} - 2* 8x * 6\sqrt{2} + (6\sqrt{2} )^{2} = 64x^{2} -96x\sqrt{2} + 72[/tex]
[tex](\frac{2}{3}x - 9)(\frac{2}{3}x+9)= (\frac{2}{3})^{2} - {9}^{2}[/tex]
[tex]{(6\sqrt{2}x+7 )}^{2} = {(6\sqrt{2}x)}^{2} + 2*7*6\sqrt{2}x + {7}^{2} = 72{x}^{2} + 84\sqrt{2}x + 49[/tex]
