Question

алгебра 8кл помогите

Answer 1

1) $\sqrt{(122-22)(122+22)} =\sqrt{10^{2} *12^{2} } = 120$

2) $\sqrt{(6.8-3.2)*(6.8+3.2)} = \sqrt{36} = 6$

3) Аналогично - $\sqrt{144} =12$

4) $\sqrt{6,25*0,01} = \sqrt{625*10^{-4} } = 25*0,01 = 0.25$