Question

a) -11/12 x X+ 0,25=5

b) (x-1)⁵=-32

Answer 1

a)\(\frac{-11}{12}.x+0,25=5\)

\(\Rightarrow-\frac{11}{12}.x=5-0,25=\frac{19}{4}\)

\(\Rightarrow-\frac{11}{12}.x=\frac{19}{4}\)

\(\Rightarrow x=\frac{-57}{11}\)

b)\(\left(x-1\right)^5=-32=-2^5\)

\(\Rightarrow\left(x-1\right)=-2\)

\(\Rightarrow x=-2+1=-1\)

Answer 2

a ) - 11 / 12 x X + 0 , 25 = 5

     - 11 / 12 x X              = 4 , 75

                     X              = - 57 / 11

b ) ( x - 1 ) ⁵ = -32

     ( x - 1 ) ⁵ = ( - 2 ) ⁵

=> x - 1 = - 2

         x  = -2 + 1

         x  = -1