How do you solve this expression? 5 square root 10^4.4× 10^-6.3 ÷ 10^-8.1
- print Print
- list Cite
Expert Answers
calendarEducator since 2011
write5,349 answers
starTop subjects are Math, Science, and Business
Supposing that you should to solve the following expression `5 sqrt((10^4.4*10^(-6.3))/(10^(-8.1)))` , you need to use the negative power property suchthat:
a^(-b) = 1/(a^b)
Reasoning by analogy, you may convert each negative power such that:
`10^(-6.3) = 1/(10^6.3)`
`10^(-8.1) = 1/(10^(8.1))`
Using the conversions above yields:
`5 sqrt((10^4.4*10^(-6.3))/(10^(-8.1)))` = `5sqrt ((10^4.4*(1/(10^6.3)))/(1/(10^8.1)))` = `5sqrt ((10^4.4*10^8.1)/(10^6.3))`
You also need to use the following exponetial identity such that:
`a^x*a^y = a^(x+y)`
`a^x/a^y = a^(x-y)`
Reasoning by analogy yields:
`5 sqrt (10^(4.4+8.1-6.3)) = 5sqrt (10^6.2)`
You need to convert the square root into a power such that:
`5sqrt (10^6.2) = 5 ((10^6.2))^(1/2) => 5sqrt (10^6.2) = 5*(10)^(6.2/2)`
`5sqrt (10^6.2) = 5*10^(3.1) = 5*10^(31/10)`
Converting `10^(31/10)` into a `n-th` root yields:
`5sqrt (10^6.2) = 5*root(10)(10^31) = 5*10^3root(10)10 = 5000 root(10)10`
Hence, performing the simplifications and conversions above yields `5 sqrt((10^4.4*10^(-6.3))/(10^(-8.1))) = 5000 root(10)10.`
Related Questions
- How do you simplify this expression?3 square root 81 ÷ 5 square root 729
- 2 Educator Answers
- How do u find the square root of 1/2 * (square root of 8 + square root of 2)?
- 1 Educator Answer
- expand the expression log square root of x
- 1 Educator Answer
- Solve square root (2x+6)=4
- 1 Educator Answer
- Given x = square root (3-square root 5) + square root(3+square root 5) prove that x^2 = 10
- 1 Educator Answer
Unlock This Answer Now
Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.