Question

rezolvați această problemă : (2,07³ x 2,07⁷ : 2,07⁴) -³ : 2,07⁵,va rog frumos din tot sufletul ajutați-ma!! Dau coroana si 100 de puncte !! Va rog frumos​

Answer 1

Răspuns:

$\bf \big(2,07^{3} \cdot2,07^{7} : 2,07^{4} \big)^{ - 3} : 2,07^{5} =$

$\bf \big(2,07^{3 + 7} : 2,07^{4} \big)^{ - 3} : 2,07^{5} =$

$\bf \big(2,07^{10 - 4} \big)^{ - 3} : 2,07^{5} =$

$\bf \big(2,07^{6} \big)^{ - 3} : 2,07^{5} =$

$\bf \dfrac{1}{\big(2,07^{6} \big)^{3}} : 2,07^{5} = \dfrac{1}{2,07^{6 \cdot 3}} : 2,07^{5} =$

$\bf \dfrac{1}{2,07^{18}} \cdot\dfrac{1}{2,07^{5}} =\dfrac{1}{2,07^{18 + 5}} = \dfrac{1}{2,07^{23}}= \red{ \underline{2,07^{ - 23}}}$

==pav38==

Answer 2

(2,07³ × 2,07)⁷ : 2,07⁴)-³ : 2,07⁵

= (2,07⁶)-³ : 2,07⁵

= 2,07-¹⁸ : 2,07⁵ = 2,07-²³ = (207/100)-²³

= (100/207)²³ = 100²³/207²³