How do I work out 1/R + 1/R^2 = 450 in steps please

Question

I need to know the steps to get the question to 2.2R = 658

 

Answer 1

I don't understand the "I need to get question into 2.2R = 658)

 

However, this question is fairly simple.....

 

1/R+1/R^2=450.... combine fractions....

 

(R+1)/R^2 = 450..... then multiply through by denominator....

 

R+1 = 450*R^2.....  get everything to one side, setting equation equal to zero.....

 

450*R^2 - R -1 = 0........ then solve for R using quadratic formula....

 

 

if you do not know the quadratic formula, google the formula or respond back to this post. Also respond if you still have trouble. hope i could help