SOLUTION: Solve using substitution: 2x^2+16=11x Solve using elimination: -x^2+12x=52 Solve using completing the square: 7=(x-3)^2-1 I don't know those three methods, I know how to solv

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve using substitution: 2x^2+16=11x Solve using elimination: -x^2+12x=52 Solve using completing the square: 7=(x-3)^2-1 I don't know those three methods, I know how to solv      Log On


   

Question 705675: Solve using substitution: 2x^2+16=11x
Solve using elimination: -x^2+12x=52
Solve using completing the square: 7=(x-3)^2-1
I don't know those three methods, I know how to solve the quadratic formula though.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Substitution or elimination make no sense there. You only have three different quadratic equations, each to solve individually, and no other information about any of them. The choice of methods for solving them are factoring or formula for general solution or completing the square. In these problem exercises, you are ready to go, because you know how to complete the square and the general solution formula.