Solve the system of equations.y=x2+41x−19y=42x+23Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Q. Solve the system of equations.y=x2+41x−19y=42x+23Write 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+41x−19y=42x+23So, x2+41x−19=42x+23.
Subtract and Simplify: Subtract 42x and add 19 to both sides to set the equation to zero.x2+41x−42x−19+19=42x−42x+23+19This simplifies to x2−x+42=0.
Factor Quadratic Equation: Factor the quadratic equationx2−x+42=0. This quadratic does not factor nicely, so we will use the quadratic formula to solve for x. The quadratic formula is x=2a−b±b2−4ac, where a=1, b=−1, and c=42.
Calculate Discriminant: Calculate the discriminant b2−4ac to determine the nature of the roots. Discriminant = (−1)2−4(1)(42)=1−168=−167. Since the discriminant is negative, there are no real solutions for x. This means there are no points of intersection.
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