Q. Solve the system of equations.y=2x−20x2+y2=260Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Substitute y: Substitute y from the first equation into the second equation.y=2x−20x2+y2=260x2+(2x−20)2=260
Expand and simplify: Expand and simplify the equation.x2+(2x−20)(2x−20)=260x2+4x2−80x+400=2605x2−80x+140=260
Subtract 260: Subtract 260 from both sides to set the equation to zero.5x2−80x+400−260=05x2−80x+140=0
Divide and simplify: Divide the entire equation by 5 to simplify.x2−16x+28=0
Factor the equation: Factor the quadratic equation.(x−14)(x−2)=0
Solve for x: Solve for x by setting each factor equal to zero.x−14=0 or x−2=0x=14 or x=2
Find corresponding y values: Find the corresponding y values for each x.For x=14: y=2(14)−20=28−20=8For x=2: y=2(2)−20=4−20=−16
Write coordinates: Write the coordinates in exact form.First Coordinate: (14,8)Second Coordinate: (2,−16)
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