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julliemyers Group TitleBest ResponseYou've already chosen the best response.1
23. Solve the equation. Check for extraneous solutions. 99 – 8x = 2x + 3 9l98xl=2x+3 subract 8 9l9l=6x+3 subratc 3 9l6l=6x 54=6x 9.33333333
 one year ago

julliemyers Group TitleBest ResponseYou've already chosen the best response.1
13. What are the real or imaginary solutions of the polynomial equation? 27x^3 + 125 = 0 27x^3+125=0 27x^3=–125x^3=–125/27x^3=(–5/3)^3x=–5/3
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.2
dw:1357254686057:dw
 one year ago

julliemyers Group TitleBest ResponseYou've already chosen the best response.1
18. Use Pascal’s Triangle to expand the binomial. ( d – 5)^6 =(d^410d+25d10d+100d250d+25d250d+625)(d10d+25)=(d^420d+150d500d+625)(d10d+25)=d^610d^5+25d^420d^5+200d^4500d+150d^41500d+3750d500d+5000d12500d+625d6250d+15625=d^630d^5+375d^42500d+9375d18750d+15625 21. Explain how to find the degree of a polynomial. To find the degree of a polynomial its the same number term of highest degree. for an example, if u have terms 5 10 15 20, 20 would be the degree.
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.2
your process is incorrect for the second one, you will need to take the cube root of the fraction
 one year ago

julliemyers Group TitleBest ResponseYou've already chosen the best response.1
these are questions i missed on previous tests & id like to correct them
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.2
dw:1357254904914:dwok still working on the same problem
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.2
dw:1357254993499:dw
 one year ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.1
\[27x^3 + 125 = 0\] factor the sum of two cubes as \[(3x+5)(3x^215x+25)\] first one gives you your answer, quadratic formula gives the answer for the two complex roots of \(3x^215x+25\)
 one year ago

precal Group TitleBest ResponseYou've already chosen the best response.2
dw:1357255010162:dw
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
For your first problem (# 23), you will have 2 solutions because of the absolute value expression. Case #1: For x > 9/8 9(8x  9) = 2x + 3 > x = 1.2 Case #2: For x <= 9/8 9(9  8x) = 2x + 3 > x = 39/37
 one year ago

zaynahf Group TitleBest ResponseYou've already chosen the best response.0
For #13, did you use the \[(a +b) ( a^{2} + ab + b ^{2})\] method?
 one year ago

zaynahf Group TitleBest ResponseYou've already chosen the best response.0
*correction (a+b) (a^2  ab + b^2)
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
@satellite73 please check your factoring
 one year ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.1
oh yeah, it is wrong isn't it?
 one year ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.1
\[27x^3+125=(3x+5)(9x^215x+25)\] is more like it
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.1
thx, @satellite73 you saved me a bunch of typing. Great approach, explanation, and theory. Just a typo, as we all do that from timetotime.
 one year ago
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