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Math 209 Week 2

Math 209 Week 2 - H is minus 1 W is plus 3 pg 350 and 351...

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Sheet1 Page 1 Math 209 Week 2 Pg. 326 68) 15x^2y^2 - 9xy^2 + 6x^2y 3xy(5xy - 3y + 2x) pg. 94) Area = LW x^2 + 50x = LX x x x + 50 = L pg 334 58) 12a^2 +36a + 27 (2a + 3) (6a + 9) 12a^2 + 18a + 18a + 27 (2a + 3) (6a + 9) 74) x^3 + x^2 - x - 1 x^2 (x + 1) - x - 1 (x^2 - 1) (x + 1) (x + 1) ( x - 1) ( x + 1) 92) 9x^3y - 18x^2y^2 9x^2y(x - 2y)

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Sheet1 Page 2 100) R(p) = -.08p^2 + 300p a) r = p(-.08p + 300) b) r/p = -.08p + 300 c) r/p = -.08p + 300 r/3,000 = -.08*3,000 + 300 r/3,000 = -240 + 300 r/3,000 = 60 r = 180,000 d) price = \$2,000 \$280,000/\$2,000 140 e) -.08(2,000)^2 + 300(2,000) -.08(4,000,000) + 600,000 -320,000 + 600,000 280,000 f) \$3,700 About pg. 342 & 343 64) h^2 - 9hs + 9s^2 Prime Polynomial 84) 9w - w^3 w(9 -w^2) w( 3 + w) (3 - w) 98) 2a^2 + 1 + 3a (2a^2 + 3a + 1) (2a + 1) (a + 1)
Sheet1 Page 3 112) Volume of container was = a^3 cubic meters after the height was decreased & width increased a^3 + 2a^2 - 3a cubic meters a(a^2 + 2a -3) a(a + 3) (a -1)

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Unformatted text preview: H is minus 1 W is plus 3 pg. 350 and 351 30) 3a^2 - 14a + 15 (3a - 5) ( a - 3) 58) 15x^2 + 13x -2 (15x - 2) (x + 1) 94) 18x^2 - 6x + 6 6(3x^2 - x + 1) 102)-30w^2 + w + 1 (6w + 1) (-5w + 1) 106) a)-3t^3 + 23t^2 + 8t t(-3t^2 + 23t + 8) t(-t + 8) (3t + 1) b)-3t^3 + 23t^2 + 8t-3(27) + 23(9) + 24-81 + 207 + 24 150 c) about 5.5 hours d)-1,536+1,472 + 64 Sheet1 Page 4 pg 357 56) 9x^2 + 6x + 3 3(3x^2 + 2x + 1) 72) 3x^2 - 18x - 48 3(x^2 - 6x - 16) 3(x + 2) (x - 8) 86) 2m^2 - 1,800 2(m^2 - 900) 2( m + 30) (m - 30) pg 368 84) x + y = -10 x^2 + y^2 = 68 y = -10 - x x^2 + (-10 - x)^2 = 68 x^2 + 100 + 20x + x^2 = 68 2x^2 + 20x + 32 (2x + 4) (x + 8) x = - 8 y = -10 - x y = - 2 88) x x + 1 hypotenuse is 5 cm x^2 + (x + 1)^2 = 5^2 x^2 + x^2 + 2x + 1 = 25 2x^2 + 2x -24 (2x - 6) (x + 4) 3^2 + 4^2 = 5^2 9 + 16 = 25 Length of legs 3, 4...
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Math 209 Week 2 - H is minus 1 W is plus 3 pg 350 and 351...

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