Question

wyznacz liczbe x^{-2} jesli wiadomo ze

Answer 1

x=[16¼+3⁻¹]/4=[16¼+⅓]/4=16⁷/₁₂×¼=¹⁹⁹/₁₂×¼=¹⁹⁹/₄₈

 

x⁻²=1/x²

[¹⁹⁹/₄₈]⁻²=[⁴⁸/₁₉₉]²=²³⁰⁴/₃₉₆₀₁

Answer 2

x =[16 1/4 +3^(-1)]/4 =(16 1/4 +1/3)*1/4 =(16 3/12 + 4/12)*1/4 =

= (16 7/12)*1/4 =119/12 *1/4 =119/48

 

x^(-2) = 1/x^2

(199/48)^(-2) =(48/199)^2 = 2304/39601