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  1. firstly you should expand that (u+3)^3 into (u+3)(u+3)(u+3) *remember that foil means first, outer...out using foil method (u+3)(u+3) u^2 +3u +3u + 9 combine like terms u^2 +6u + 9 and finally multiply this by the remaining (u+3) using foil...

    5 Answers · Science & Mathematics · 16/07/2010

  2. | u | = sqrt(3^2 + (-4)^2) | u | = sqrt(9+16) |u| = sqrt(25) |u| = 5

    2 Answers · Science & Mathematics · 07/12/2008

  3. sin(u / 2) = sqrt( (1 - cos(u)) / 2) cos(u / 2) = sqrt( (1 + cos(u)) / 2) tan(u / 2) = sin(u/2) / cos(u/2) = sqrt...sqrt( (8/5) / 2) = sqrt( 4/5 ) = 2 / sqrt(5) = 2 * sqrt(5) / 5 sin(u/2) = 2 * sqrt(5) / 5 sqrt( (1 - 3/5) / 2) = sqrt( (2/5) / 2...

    3 Answers · Science & Mathematics · 06/08/2010

  4. u+12/u^2 + u+2/3u u^3 + 12 + u^3 +2u/3 2u^3 + 2u/3 + 12 6u^3 +2u + 36

    3 Answers · Science & Mathematics · 26/10/2007

  5. u du/(16 + u^2) Let w = 16 + u^2 then dw = 2u du so (1/2) dw = u du We now have (1/2) ∫ dw/w = (1/2) ln w = (1/2) ln (16 + u^2) + C

    3 Answers · Science & Mathematics · 09/04/2011

  6. (u+7)^2 = 2u^2 +8u +42 u^2+14u+49=2u^2+8u+42 0=u^2-6u-7 0=(u-7)(u+1) u-7=0 or u+1=0 u=7 or -1

    7 Answers · Science & Mathematics · 02/11/2008

  7. u = <3, -2, 1 > and v = <2, -3, 1 II u II = √(9+4+1) = √14 II v II = √(4+9+1) = √14 θ = cos...

    3 Answers · Science & Mathematics · 22/10/2010

  8. do u have a sense of humor?what kind is dry, black, or how would u describe your self are u confident was school hard for u what...

    1 Answers · Arts & Humanities · 15/04/2010

  9. u^2 x^4 - u^2 re-order (this isn't exactly necessary it just makes it easier) -1u^2 + u^2 x^4 factor out the greatest common factor/ gcf (u^2) u^2 (-1 + x...

    3 Answers · Science & Mathematics · 31/07/2010

  10. u = 4i - 2j tan(u) = - 2/4 = - 1/2 → angle_u = - 26.565° v = i + 3j tan(v) = 3/1 = 3 → angle_v = 71.565° angle between u and v: = 71.565 - (- 26.565) = 71.565 + 26.565 = 98.130°

    3 Answers · Science & Mathematics · 25/05/2014

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