Question

simplfy 5/ (8+ã7)

Answer 1

I will assume that by "simplify" you mean rationalize

5/(8+√7)
= 5/(8+√7) * (8-√7)/(8-√7)
= (40 - 5√7)/(64 - 7)

= (40 - 5√7)/57

Answer 2

thank you.