Basics of Exponential Equations

Solve 8^x = 8^-1

• x = 8

• x = -8

• x = -1

• Undefined

7^x = 7⁸

• x=7

• x=8

• x=log7

Tags

CCSS.HSF.BF.B.5

The first step to solve 7^x = 19 is...

• Divide by 7 on both sides

• Move the x down in front as a coefficient

• Take the log of both sides

The first step to solve 4^2x = 8^x is to...

• Rewrite both sides with a base of 2

• Rewrite both side with a base of 4

• Divide by 4 on both side

• 4/3

• -4/3

• 3/4

• -3/4

• 2/3
• 1
• -9
• All Real Numbers

• n=1/3

• n=-1

• n=1/2

• n=2

• None of these

Solve:  4^x-1 = 5

• -1

• 1.16

• 2.16

• -2.16

Solve the exponential equation:

• -11/4

• 6

• 9/4

• 8

Solve: 7^-x = 49

• x = 1

• x = -1

• x = 2

• x = -2