posted by .


I have had to factorise the equation
x^2 + x - 30 = 0, which I think I have worked the answer out as x =-6, x =5?

I now need to explain how I can use this answer to solve the equation
4x^2 +4x -120 =0

Any advice?

  • Algebra -

    You would take your answers and plug them in to the equation.


    then work out the problems and if you are correct 0=0

    Hope this helped

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra I

    So- im trying to help my little brother out with his Algebra- but its been awhile since i have had algebra class- we need help with the following question: Solve the following equation for x: 2(x+4)=4x+12 2x+8=4x+12 2x=-4 x=-2 I think, …
  2. chemistry

    Temp - 650 Pressure - 760mm Hg mass - 0.927g volume - ?
  3. algebra

    A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture?
  4. English

    We had a health checkup at school. We had to go to hospital. My hearing was OK. My eyes had no problem. So I don't need to wear glasses. I grew 5 cm from last year! The only problem I had was that I have to go to the dentist's. I have …
  5. Chemistry

    Hydrolysis of Salt: Using the universal indicator we had to determine the pH of potassium chloride, and the results i got was pH- 7.5 . Now i have to explain this with a equation to show hydrolysis. I dunno how to write it out, but …
  6. Algebra

    Please help! I need to factorise and solve this equation, x^2 +x -30 =0 I then need to explain how I would use the answer drom this to solve the equation 4x^2 +4x-120=0
  7. Math

    I have to use my answer from a previous question (factorise and solve x^2+x-30=0 which i factorised as (x-5)(x+6)=0 and then solved as x=5 or x=-6) i now have to explain how i can use this answer to solve th equation 4x^2+4x-120=0 …
  8. Algebra

    I have this math probelm z-(3z)/(2-z)=(6)/(z-2) in my book it says to solve the equation. I have worked this problem many times and I keep comming up with different answers. When I use an online calculator to check my work it is giving …
  9. Maths

    Hi! I need help. I have worked out total rainfall, I have the monthly average (given by beauro) and I worked out the mean rainfall each month. My teacher says I need to work out the amount of rainfall in m-cubed that would fall on …
  10. Algebra

    I am a parent trying help my son, who has trouble understanding and remembering how to work his math. I never had this math, so it is hard for me to explain it. If I see it worked out. Then I can explain it, (I, Think) here is the …

More Similar Questions