Question 951594
d=daughter's age; 4d=father's age
{{{d^2+(4d)^2=1088}}}
{{{d^2+16d^2=1088}}} 
{{{17d^2=1088}}} Divide each side by 17
{{{d^2=64}}} Find the square root of each side
{{{sqrt(d^2)=sqrt(64)}}}
d=8 ANSWER 1: The daughter is 8 yeras old.
4d=4(8)=32 years ANSWER 2: The father is 32 years old.
CHECK:
{{{(8^2)+(32^2)=1088}}}
{{{64+1024=1088}}}
{{{1088=1088}}}