algebra 2

-6(u+5)^2=120

  1. 👍 0
  2. 👎 0
  3. 👁 104
asked by supreme

  1. -5 + or - 4i squareroot 5

    1. 👍 0
    2. 👎 0
    posted by Amanda

  2. -5 to both sides?
    so what about the u?
    in the parenthises with the five, what happens to that?

    1. 👍 0
    2. 👎 0
    posted by supreme

  3. Take the (u+5)^2 and solve (u+5)(u+5)

    that gives you -6(u^2-10u-25)=120

    then distribute the -6

    -6u^2-60u-150= 120 then subtract 120 from both sides

    -6u^2-60u-270=0 then divide everythin by -6 giving you

    u^2+10u+45=0 then use the quadratic formula
    (-b +/- squareroot b^2 -4ac)/2a

    then you will get the answer. If you don't know how to use the quadratic formula then let me know.

    1. 👍 0
    2. 👎 0
    posted by Amanda

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    I am doing something wrong when I work this question. Can someone show me the steps. I have the answer. x

    asked by priscilla on April 14, 2007

  2. anna

    There is a right triangle. the legs are x and y and the hypotenuse is 120. the angle opposite x is 58. please check my answer. x= 120 y=64 because: SIN58= x/120 COS58=y/120

    asked by Geometry on March 11, 2008

  3. Algebra 1

    You are planning a rectangular patio with length that is 7 ft less than three times its width. The area of the patio is 120 ft^2. What are the dimensions of the patio? I just need to figure out what equation to write from this.

    asked by Rachel on June 13, 2015

  4. Math (Trigenometry)

    Find two positve real numbers whose product is a maximum and whose sum of the first number and four times the second number is 120. This is as far as I've gotten in solving it. *first number is x. *second number is y. *xy=maximum,

    asked by Anonymous on February 8, 2011

  5. Algebra

    1.Mary is selling her craft to earn money she sells her bracelets for $6 and her necklaces for $10 her goal is to make at least $120 in sales which of the following represents three possible solutions to the problem A.6x+10y=120

    asked by GummyBears on December 10, 2015

  6. Algebra

    1.Mary is selling her craft to earn money she sells her bracelets for $6 and her necklaces for $10 her goal is to make at least $120 in sales which of the following represents three possible solutions to the problem A.6x+10y=120

    asked by GummyBears on December 10, 2015

  7. math

    a truck uses 8L of gas to go 120 kkkm. how much gas does it use to go 300km? 8 * 300/120 = 20 I'm assuming "kkkm" was a typo could you do it like 8/120*300? To think of it logically, the proportions remain the same. 8/120 = X/300

    asked by ann on December 19, 2006

  8. algebra

    A rancher is putting up a rectangular electic fence to contain some horses. The rancher has 1200 feet of electric wire. The fence needs to be at least 120 feet in one direction in order to contain the barn. Which system of linear

    asked by letes on May 4, 2010

  9. Math

    Samuel as six 20-dollar-bills.He spent half of the money on a video game.Which pair of number sentences can be used to determine how much money Samuel had left? A.6+20=26 26/2=13 B.20/2=10 10+6=16 C.6x20=120 120-20=100 D.6x20=120

    asked by NrGliight on May 9, 2012

  10. Math

    One grocery clerk can stock a shelf in 40 min, whereas a second clerk requires 20 min to stock the same shelf. How long would it take to stock the shelf if the two clerks worked together? Is this how you do this: t/40 +t/24 =1

    asked by Meghan on March 24, 2010

  11. Math

    One grocery clerk can stock a shelf in 40 min, whereas a second clerk requires 20 min to stock the same shelf. How long would it take to stock the shelf if the two clerks worked together? Is this how you do this: t/40 + t/24 =1

    asked by Meghan on March 24, 2010

More Similar Questions