Radical Equations

(x-2)^1/5=-2

• 25

• -4

• -30

• 12

(x-2)^1/3=5

• 127

• 25

• -5,5

• -9,9

x^1/3-7=0

• 7

• -7,7

• 27

• 343

• 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

• subtract -5-6

• add 6 to the other side

• subtract 6 to the other side

• divide by -6

Tags

CCSS.HSA.REI.A.2

Tags

CCSS.HSA.REI.A.2

• raise both sides to the 4th power

• add 2 to the other side

• divide by 2

• divide by 4

• square both sides

Tags

CCSS.HSA.REI.A.2

• it's valid

• it's extraneous

Tags

CCSS.HSA.REI.A.2

• 8

• -4

• 4

• no solution

• -8

Tags

CCSS.HSA.REI.A.2