The third method of solving quadratics is to simply use the square root, but there’s a danger here: you **still have two solutions**. The + is built into the quadratic formula, but it still needs to be added here. And that falls to you, the solver!

Today’s lesson *also* included a brief revisit to word problems, this time resulting in a quadratic equation.

## Today’s Files

- HW 3.14 – Solving with Square Roots and Quadratic Word Problems
- Notes
- Lesson Video 1 (Solving with square root)
- Lesson Video 2 (Area word problem)
- Video Archive

## Cumulative IXL Modules

**J.4****Solve a quadratic equation using square roots**- J.5 Solve a quadratic equation using the zero product property
- J.6 Solve a quadratic equation by factoring
- J.9 Solve a quadratic equation using the quadratic formula
- L.1 Roots of integers
- L.3 Find roots using a calculator
- L.7 Multiply radical expressions
- T.1 Identify the direction a parabola opens
- T.2 Find the vertex of a parabola
- T.4 Find the axis of symmetry of a parabola
- From Algebra 1