Q. Solve the system of equations.y=x2+18x+5y=x−11Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Substitute y into first equation: Substitute y from the second equation into the first equation: x2+18x+5=x−11.
Solve for x: Now, let's solve for x: x2+18x+5−x+11=0, which simplifies to x2+17x+16=0.
Factor quadratic equation: Factor the quadratic equation: (x+1)(x+16)=0.
Set factors equal to zero: Set each factor equal to zero and solve for x: x+1=0 or x+16=0.
Solve for x: Solving x+1=0 gives us x=−1.
Find y for x=−1: Solving x+16=0 gives us x=−16.
Find y for x=−16: Substitute x=−1 into the second equation to find y: y=−1−11, so y=−12.
Find y for x=−16: Substitute x=−1 into the second equation to find y: y=−1−11, so y=−12.Substitute x=−16 into the second equation to find y: y=−16−11, so y=−27.
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