Solve the system of equations.y=45x+46y=x2+38x+28Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Q. Solve the system of equations.y=45x+46y=x2+38x+28Write the coordinates in exact form. Simplify all fractions and radicals.(______,______)(______,______)
Substitute y in second equation: Substitute y from the first equation into the second equation. Since y=45x+46, we can replace y in the second equation with 45x+46. This gives us the equation 45x+46=x2+38x+28.
Rearrange and solve for x: Rearrange the equation to set it to zero and solve for x. This means we subtract 45x and 46 from both sides to get 0=x2+38x+28−45x−46. Simplifying this gives us 0=x2−7x−18.
Factor quadratic equation: Factor the quadratic equationx2−7x−18. The factors of −18 that add up to −7 are −9 and +2. So the factored form is (x−9)(x+2)=0.
Solve for x: Solve for x by setting each factor equal to zero. This gives us two solutions: x−9=0, which gives x=9, and x+2=0, which gives x=−2.
Substitute x=9 for y: Substitute x=9 into the first equation y=45x+46 to find the corresponding value of y. This gives us y=45(9)+46, which simplifies to y=405+46, and thus y=451.
Substitute x=−2 for y: Substitute x=−2 into the first equation y=45x+46 to find the corresponding value of y. This gives us y=45(−2)+46, which simplifies to y=−90+46, and thus y=−44.
More problems from Solve a nonlinear system of equations