−2−x−11x+3yamp;=11y2−4y+10amp;=62If (x1,y1) and (x2,y2) are two distinct solutions to the system of equations shown, what is the product of the x values of the two solutions x1⋅x2 ?
Q. −2−x−11x+3y=11y2−4y+10=62If (x1,y1) and (x2,y2) are two distinct solutions to the system of equations shown, what is the product of the x values of the two solutions x1⋅x2 ?
Write Equations: Write down the given system of equations.The system of equations is:−2−x=11y2−4y+10−11x+3y=62
Eliminate Fraction: Multiply the first equation by 11 to eliminate the fraction.11(−2−x)=y2−4y+10−22−11x=y2−4y+10
Express y in x: Rearrange the second equation to express y in terms of x. -11x+3y=62 3y=11x+62 y=311x+62
Substitute in Equation: Substitute the expression for y from Step 3 into the equation from Step 2.−22−11x=(311x+62)2−4(311x+62)+10
Expand and Distribute: Expand the square and distribute the 4 in the equation from Step 4.−22−11x=9121x2+1342x+3844−344x+248+10
Eliminate Fractions: Multiply through by 9 to eliminate the fractions.−198−99x=121x2+1342x+3844−3(44x+248)+90
Combine Like Terms: Distribute the 3 and combine like terms.−198−99x=121x2+1342x+3844−132x−744+90
Simplify Equation: Simplify the equation.−198−99x=121x2+1210x+3190
Form Quadratic Equation: Move all terms to one side to form a quadratic equation. 121x2+1309x+3388=0
Calculate Discriminant: Factor the quadratic equation, if possible, to find the x values.This quadratic does not factor nicely, so we will use the quadratic formula to find the x values.x=2a−b±b2−4acHere, a=121, b=1309, and c=3388.
Calculate Discriminant: Calculate the discriminant b2−4ac to ensure that there are two distinct real solutions.Discriminant = 13092−4(121)(3388)
Find Product of Roots: Calculate the discriminant.Discriminant = 1713481−1636608Discriminant = 76873Since the discriminant is positive, there are two distinct real solutions.
Simplify Product: Use Vieta's formulas to find the product of the roots without actually solving for the roots.The product of the roots of a quadratic equation ax2+bx+c=0 is given by ac.So, x1×x2=ac=1213388
Simplify Product: Use Vieta's formulas to find the product of the roots without actually solving for the roots.The product of the roots of a quadratic equation ax2+bx+c=0 is given by ac.So, x1×x2=ac=1213388 Simplify the product of the roots.x1×x2=1213388$x_1 \times x_2 = \(28\)
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