Odpowiedź :
Odpowiedź:
[tex]\huge\boxed{\boxed{\text{Odp}. \ \text{A}}}[/tex]
Szczegółowe wyjaśnienie:
[tex]1-(-2\frac{1}{4})^2=1-(-\frac{2\cdot4+1}{4})^2=1-(-\frac{8+1}{4})^2=1-(-\frac{9}{4})^2=\\\\=1-(-\frac{9}{4}\cdot(-\frac{9}{4}))=1-\frac{81}{16}=\frac{16}{16}-\frac{81}{16}=-\frac{65}{16}=-4\frac{1}{16}[/tex]
[tex]1 - ( - 2\frac{1}{4} ) ^{2} = 1 - ( (- 2 \frac{1}{4} ) \times (- 2 \frac{1}{4} )) = 1 - (( - \frac{9}{4}) \times (- \frac{9}{4}) ) = 1 - ( \frac{81}{16} ) = 1 - \frac{81}{16} = \frac{16}{16} - \frac{81}{16} = - \frac{65}{16} = - 4 \frac{1}{16} [/tex]
Odpowiedź: A