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