The inverse operation of taking the square is taking the square root. However, unlike the other operations, when we take the square root we must remember to take both the positive and the …

Sal solves challenging quadratic equations like (4x+1)²-8=0 by taking the square root of both sides. Created by Sal Khan and CK-12 Foundation.

Use the cards below to create a list of steps in order that will solve the following equation. 3 times x plus 6 squared is equal to 75. And I encourage you to pause this video now and try to figure it out on your …

Sal solves the equation (x+3)²-4=0 and finds the x-intercepts of f (x)= (x-2)²-9.

When taking square roots the answer can either be a positive or negative number, so we use the plus or minus symbol to represent that. Which value we use actually depends on the problem we are doing.

Solve quadratic equations of the form (x+a)²-b=0. These can be solved using square roots. For example, solve (x-5)²-4=0.

For example, solve x²+6x=-2 by manipulating it into (x+3)²=7 and then taking the square root.

On KhanAcademy, if your answer needs to include a square root, then a menu of special symbols is provided when your cursor is in the answer box. If no option is provided, then likely you haven't …

The inverse operation of taking the square is taking the square root. However, unlike the other operations, when we take the square root we must remember to take both the positive and the …

Solve simple quadratic equations by taking the square root of both sides of the equation.