Solve the system of equations.y=x2+20x−25y=22x+23Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Q. Solve the system of equations.y=x2+20x−25y=22x+23Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Set Equations Equal: Set the two equations equal to each other since they both equal y.x2+20x−25=22x+23
Subtract and Simplify: Subtract 22x+23 from both sides to set the equation to zero.x2+20x−25−22x−23=0
Combine Like Terms: Combine like terms.x2−2x−48=0
Factor Quadratic Equation: Factor the quadratic equation. (x−8)(x+6)=0
Solve for x: Set each factor equal to zero and solve for x.x−8=0 and x+6=0x=8 and x=−6
Substitute x=8: Substitute x=8 into the first equation to find y.y=82+20(8)−25y=64+160−25y=199
Substitute x=−6: Substitute x=−6 into the first equation to find y.y=(−6)2+20(−6)−25y=36−120−25y=−109
Write Coordinates: Write the coordinates in exact form.First Coordinate: (8,199)Second Coordinate: (−6,−109)
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