Question

Help! how do I solve?

Answer 1

`( (3)/(4) )^2= (3)/(4) * (3)/(4)` and multiply across. Then you have
`(9)/(16) - (1)/(10)`. You want each fraction to have the same denominator so
`(9)/(16) * (10)/(10)` and
`(1)/(10) * (16)/(16)`. This results in
`(90)/(160) - (16)/(160) = (74)/(160) = (37)/(80)`. 37 is a prime number so you can't reduce any further.