Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Solve the system of equations.\newliney=3x5y = 3x - 5\newliney=x215x+40y = x^2 - 15x + 40\newlineWrite the coordinates in exact form. Simplify all fractions and radicals.\newline(______,______)\newline(______,______)

Full solution

Q. Solve the system of equations.\newliney=3x5y = 3x - 5\newliney=x215x+40y = x^2 - 15x + 40\newlineWrite the coordinates in exact form. Simplify all fractions and radicals.\newline(______,______)\newline(______,______)
  1. Substitute yy Equation: Substitute yy from the first equation into the second equation. Since y=3x5y = 3x - 5, we can replace yy in the second equation with 3x53x - 5. This gives us 3x5=x215x+403x - 5 = x^2 - 15x + 40.
  2. Rearrange and Solve: Rearrange the equation to set it to zero and solve for xx. This means we will subtract 3x3x and add 55 to both sides, resulting in 0=x215x+3x+4050 = x^2 - 15x + 3x + 40 - 5, which simplifies to 0=x212x+350 = x^2 - 12x + 35.
  3. Factor Quadratic Equation: Factor the quadratic equation x212x+35x^2 - 12x + 35. The factors of 3535 that add up to 12-12 are 7-7 and 5-5. So, the factored form is (x7)(x5)=0(x - 7)(x - 5) = 0.
  4. Solve for x: Solve for x by setting each factor equal to zero. This gives us x7=0x - 7 = 0 or x5=0x - 5 = 0, which means x=7x = 7 or x=5x = 5.
  5. Substitute x=7x = 7: Substitute x=7x = 7 into the first equation y=3x5y = 3x - 5 to find the corresponding value of yy. This gives us y=3(7)5y = 3(7) - 5, which simplifies to y=215y = 21 - 5, resulting in y=16y = 16.
  6. Substitute x=5x = 5: Substitute x=5x = 5 into the first equation y=3x5y = 3x - 5 to find the corresponding value of yy. This gives us y=3(5)5y = 3(5) - 5, which simplifies to y=155y = 15 - 5, resulting in y=10y = 10.

More problems from Solve a nonlinear system of equations