Question 1119294
{{{56*r^(5)=-1792}}}

{{{r^5=-1792/56=32}}}

{{{r^5=2^5}}}

{{{r=2}}}-----but need {{{r<0}}} so {{{r=-2}}}

-

{{{A*2^(7-1)=56}}}

{{{A*2^6=7*2*2*2}}}

{{{A*2^3*2^3=7*2^3}}}

{{{A*2^3=7}}}

{{{A=7/8}}}


-

First Term, {{{highlight(7/8)}}}
Ratio,  {{{highlight(-2)}}}