Solve the system of equations.y=x2+18x+36y=4x+12Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Q. Solve the system of equations.y=x2+18x+36y=4x+12Write 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.y=x2+18x+36y=4x+12So, x2+18x+36=4x+12.
Subtract and Simplify: Subtract 4x+12 from both sides to set the equation to zero.x2+18x+36−4x−12=0This simplifies to x2+14x+24=0.
Solve for x: Solve for x by setting each factor equal to zero.x+2=0 or x+12=0This gives us x=−2 or x=−12.
Substitute x=−2: Substitute x=−2 into one of the original equations to find the corresponding y value.Using y=4x+12:y=4(−2)+12y=−8+12y=4So one intersection point is (−2,4).
Substitute x=−12: Substitute x=−12 into one of the original equations to find the corresponding y value.Using y=4x+12:y=4(−12)+12y=−48+12y=−36So the other intersection point is (−12,−36).
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