math,algebra

posted by .

I need help if someone can show me the steps to these 2 problems.

Problem #1

Use the properties for radicals to simplify each of the following expressions. Assume that all variables represent positive real numbers.

radical and inside of the radical theres a fraction that reads
(12x^3)/(5)


Problem #2
Simplify by combining like terms.
radical 63 minus 2radical 28+5radical 7

On the first, remember that x cubed is x squared times x.

you have a principle that says

sqrt (a^n * a) = a^(n/2) sqrt a

so bring the x squared out as x.

I cant follow the second.

Here is a good way to print radicals:

to get the √ sign, hold down the ALT key while you press 251 on the number pad, then release the ALT key.

I interpret your second question this way:
√63-2√28+5√7

you can only add or subtract like radicals, so in these kind of question they most likely want you to change them all to the same kind of radical.
Look for the lowest radical, usually the others can be changed to that.

hint: isn't 63 = 9*7 and 28=4*7 ???

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra,math,help

    Use Property 2 to simplify each of the following radical expressions. sqrt (10)/ sqrt(49) My answer: sqrt (10) / (7) THis next one i need help: Use the properties for radicals to simplify each of the following expressions. Assume that …
  2. Math,correction Plz

    Can someone correct these for me please. Problem #68 Science and medicine. Find the time required for an object to fall to the ground from a building that is 1400 ft high. Using the formula t=(1)/(4)radical(s). My answer: 9 minutes …
  3. math, correction,plz

    can someone correct these for me plz.... Problem#36 Use Property 2 to simplify each of the following radical expressions. Radical (10)/(49) My answer: (radical(2 times 5))/(7) Use the properties for radicals to simplify each of the …
  4. math,algebra,correction

    Science and medicine. Find the time required for an object to fall to the ground from a building that is 1400 ft high. using the formula : t = (1)/(4) radical (s) My answer: t = 9.35 (but i don't know how to word it if minutes all …
  5. math.algebra

    I need help with this last math problem i have: Using the properties for radicals to simplify, assuming all variables represent positive real numbers. square root 12x^3/5
  6. algebra

    Simplify each radical expression. Assume all variables represent positive real numbers ãa^10
  7. math

    Simplify by taking roots of the numerator and the denominator assume that all expressions under radicals represent positive numbers 3square 27x^8/y^3
  8. algebra

    multiply and simplify by factoring. Assume that all expressions under the radicals represent nonnegative numbers. ^4 sq. rt. (810x^8y10)= show steps if possible.
  9. Math

    Use properties of logarithms to rewrite the expression. Simplify the results if possible. Assume all variables present positive real numbers. Log6(7m+3q)
  10. Math

    Use properties of logarithms to rewrite the expression. Simplify the results if possible. Assume all variables present positive real numbers. log2(2squareroot 3/5)

More Similar Questions