Flash Lesson Tuesday 04.18.23 Radical Equations

To undo a square root in an equation, you need to...

• multiply both sides by 2

• square both sides

• take the square root of both sides

• divide both sides by 2

Tags

CCSS.8.EE.A.2

• Divide both sides by 2

• Square both sides

• Add 5 to both sides

• Subtract 31 from both sides

Tags

CCSS.HSA.REI.A.2

• Divide both sides by 3

• Add 2 to both sides

• Cube root both sides

• Raise both sides to the power of 3

How do you isolate a variable raised to the (2/3) power?

• cube it
• square it
• raise both sides to the (3/2) power
• raise both sides to the (2/3) power

Identify the parts of the radical

a

b

c

index

radicand

radical symbol

We can only multiply or divide radicals if they have the same .

(a)  

• index
• radical
• radicand
• coefficient

The number under the radical sign or square root sign is called the ______.

• radical sign

• radicand

• factor

• exponent

Tags

CCSS.HSN.RN.A.2

• square both sides

• take the square root of both sides

• multiply by the square root

• multiply by 2

What did I say are the two big steps in these radical equation problems?

• get rid of the fractions

• isolate the radical

• move everything to one side of the equal sign

• get rid of the radical

Tags

CCSS.HSA.REI.A.2