SOLUTION: Can you please help me to understand how Re=1-(1-R)(1-R) becomes Re=2R-R^2. I multiplied out the brackets and was left with 1-1-R-R+R^2, which gave me -2R+R^2

SOLUTION: Can you please help me to understand how Re=1-(1-R)(1-R) becomes Re=2R-R^2. I multiplied out the brackets and was left with 1-1-R-R+R^2, which gave me -2R+R^2

Algebra.Com

Question 685650: Can you please help me to understand how Re=1-(1-R)(1-R) becomes Re=2R-R^2. I multiplied out the brackets and was left with 1-1-R-R+R^2, which gave me -2R+R^2
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Re=1-(1-R)(1-R)
Re = 1 - ( 1 - 2R + R^2 )
Re = 1 - 1 + 2R - R^2
Re = 2R - R^2

RELATED QUESTIONS
1/R + 1/S and (S+R)/RS R=150 and S=120 1/R + 1/S = ? Simplify the answer Can... (answered by shree840)

1.Simplify a) [(3^-2 r s^-4 )^2 / ( 2^2 r^-2 s^2 ) ^ 3 ] ^ -2 Can you please help me... (answered by MathLover1)

Solve for r a) A = P(1+r)^2 Can you please help me out? Thanks so much in advance:)... (answered by Cromlix)

completely factor the expression r^2-2r+1 a. prime b. r(r-2)+1 c. (r-1)(r-1) d.... (answered by jim_thompson5910)

I don't understand how to solve the formulas below for indicated variables. Please show... (answered by rfer)

i need help with an (intermediate algerbra: Rational expressions) im not to sure how to... (answered by jim_thompson5910)

Solve for r: 4(r-2)= 2(r+8) This is how I am trying to do it: I isolated the variable (answered by prince_abubu,zynan88)

Please help me solve this problem: 4x*1/5+1/R=x*5+R I tried solving it the... (answered by Alan3354)

Please help me with this expression. I have been working on it for 3 days now: Perform... (answered by Alan3354,MathTherapy)