Finding Polynomials

FINDING POLYNOMIALS In order to evaluate the polynomials, I will first need to write the polynomial expressions without any parenthesis. Therefore, according to the example, I will need to FOIL the binomial (1+r)2 and then multiply all terms by P. I will begin by rewriting the polynomial expression without any parenthesis in ascending order of the variable r, as opposed to descending order, with the exponent in the last term instead of the first term.
P(1+r)2 This is the first expression.
P=$200 and r=10% = .10 P= amount invested and r = % rate.
P+2Pr+Pr2 Formula expanded
200+2(200)(.10)+200(.10)2 Substituted values into formula
200+40+200(.01) .102=.01 and 2(200)(.10)=40
200+40+2 200(.01)=2
242 Formula solved.
Starting with $200 and compounding 10% interest annually, yields $42 in interest at the end of one year for a total of $242.00.
P(1+r)2 This is the first expression.
P=$5,670 and r=3.5% = .035 P= amount invested and r = % rate.
5,670+2(5,670)(.035)+5,670(.035)2 Substituted values into formula.
5,670+396.90+5,670(.001225) .0352=.001225 and 2(5,670)(.035)=396.90
5,670+396.90+6.94575 5,670(.001225) = 6.94575
6,073.84575 Formula solved.
Starting with $5,670 and compounding 3.5% interest once a year, yields $403.85 in interest at the end of one year for a total of $6,073.85. The above problems are applicable to my everyday life, because they show me how to compound the current interest that I have on some of my accounts. Therefore, if I calculate everything correctly, I will know how much interest my money has yielded over a period of time. The following is a completion of problem 70 on page 311 of Elementary and Intermediate Algebra. I will show how I divide like terms and the dividend by the divisor.
(-9x3+3x2-15x)/(-3x) Given problem -9x(x)(x)(x) = -9x(x)(x)(x) = 3x2
-3x -3x I divided -9x3 by -3x and used the strikeout font to show the canceling factors.