Trigonometry

posted by .

How do you solve these equations algebraically?

y=x^2+4x
2x-y=1

y=x^2+2x+3
x+y=1

  • Trigonometry -

    I would use substitution. For instance, the first:
    y= x^2+4x
    2x- (x^2+4x)=1
    x^2-2x+1=0
    (x-1)(x-1)=0
    x=1 y=5

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math b

    solve each system of equations algebraically: x^2+y^2=18 x+y=4
  2. Triginometry

    Solve the following equations algebraically and check. y=2x^2+2x+3 y=x+3
  3. Geometry

    How do solve the equations algebraically?
  4. Math

    solve the equations algebraically x^2 + y^2 = 25 3y - 4x = 0
  5. Math

    1/2z - 1/4w = 1/6 1/2z + 1/4w = 1/6 Solve the system of equations algebraically.
  6. Trigonometry

    How do you solve this systems of equations algebraically?
  7. Pre-Calculus/Trigonometry

    Solve the following system of equations algebraically. Verify your solution by using matrices. 3x-y=0 5x+2y=22
  8. Pre-Calculus/Trigonometry

    Solve the following system of equations algebraically. Verify the solution by using matrices. 8x-2y=5 -12x+3y=7
  9. Pre Calculas

    7. For the function defined by: f(x)= {x^2, x<=1} {2x+1, x>1} a. evaluate f(0) 8. Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices. 3x-y=0 5x+2y=22 9. Solve the …
  10. math homework

    solve the system of equations algebraically for x and y { x^2 + y^2 = 26 x + y = 6 a. (1,5) (1,4) b. (4,5) (5,4) c. (5,1) (5,1) d. (1,5) (5,1) e. no solution

More Similar Questions