Identify Equation Types: Identify the type of the equations given.The first equation y=x−2 is a linear equation, and the second equation x2+y2=52 is a circle with radius 52 centered at the origin.
Substitute y Expression: Substitute the expression for y from the first equation into the second equation.By substituting y=x−2 into x2+y2=52, we get x2+(x−2)2=52.
Expand and Simplify: Expand and simplify the equation.Expanding (x−2)2 gives x2−4x+4, so the equation becomes x2+x2−4x+4=52.
Combine Terms and Solve: Combine like terms and solve for x. Combining x2 terms gives 2x2−4x+4=52. Subtract 52 from both sides to get 2x2−4x−48=0.
Divide and Simplify: Divide the entire equation by 2 to simplify.Dividing by 2 gives x2−2x−24=0.
Find x Values: Find the values of x. Setting each factor equal to zero gives us x−6=0 or x+4=0, so x=6 or x=−4.
Substitute for y: Substitute the values of x back into the first equation to find the corresponding y values.For x=6, y=6−2=4. For x=−4, y=−4−2=−6.
Check Solutions: Check both pairs (x,y) in the second equation to ensure they satisfy it.For (6,4), we check 62+42=52, which simplifies to 36+16=52, which is true.For (−4,−6), we check (−4)2+(−6)2=52, which simplifies to 16+36=52, which is also true.
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