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Solve the system of equations.\newliney=21x10y = 21x - 10\newliney=x2+35x25y = x^2 + 35x - 25\newlineWrite the coordinates in exact form. Simplify all fractions and radicals.\newline(______,______)\newline(______,______)

Full solution

Q. Solve the system of equations.\newliney=21x10y = 21x - 10\newliney=x2+35x25y = x^2 + 35x - 25\newlineWrite the coordinates in exact form. Simplify all fractions and radicals.\newline(______,______)\newline(______,______)
  1. Substitute yy into second equation: Substitute yy from the first equation into the second equation. Since y=21x10y = 21x - 10 and y=x2+35x25y = x^2 + 35x - 25, we can set them equal to each other: 21x10=x2+35x2521x - 10 = x^2 + 35x - 25.
  2. Rearrange and solve for x: Rearrange the equation to set it to zero and solve for xx: x2+35x25(21x10)=0x^2 + 35x - 25 - (21x - 10) = 0. This simplifies to x2+14x15=0x^2 + 14x - 15 = 0.
  3. Factor the quadratic equation: Factor the quadratic equation: (x+15)(x1)=0(x + 15)(x - 1) = 0. This gives us two possible solutions for xx: x=15x = -15 or x=1x = 1.
  4. Solve for yy with x=15x = -15: Solve for yy using the first equation y=21x10y = 21x - 10 with x=15x = -15: y=21(15)10=31510=325y = 21(-15) - 10 = -315 - 10 = -325.
  5. Solve for yy with x=1x = 1: Solve for yy using the first equation y=21x10y = 21x - 10 with x=1x = 1: y=21(1)10=2110=11y = 21(1) - 10 = 21 - 10 = 11.
  6. Write solution as coordinate points: Write the solution as coordinate points. The coordinate points are (15,325)(-15, -325) and (1,11)(1, 11).

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