Q. Solve the system of equations.y=−2x+10x2+y2=65Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Substitute and Simplify: Substitute y from the first equation into the second equation.y=−2x+10x2+y2=65x2+(−2x+10)2=65
Expand and Subtract: Expand and simplify the equation.x2+(−2x+10)2=65x2+(4x2−40x+100)=655x2−40x+100=65
Divide and Simplify: Subtract 65 from both sides to set the equation to zero.5x2−40x+100−65=05x2−40x+35=0
Factor the Equation: Divide the entire equation by 5 to simplify.55x2−40x+35=50x2−8x+7=0
Find y Values: Solve for x by setting each factor equal to zero.x−7=0 or x−1=0x=7 or x=1
Write Coordinates: Find the corresponding y values using the first equation y=−2x+10. For x=7: y=−2(7)+10=−14+10=−4 For x=1: y=−2(1)+10=−2+10=8
Write Coordinates: Find the corresponding y values using the first equation y=−2x+10. For x=7: y=−2(7)+10=−14+10=−4 For x=1: y=−2(1)+10=−2+10=8 Write the coordinates in exact form. First Coordinate: (7,−4) Second Coordinate: (1,8)
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