### Rational/irrational expressions

Solve 5 SQRT 2050 Determining rational and irrational mathematical expressions without the use of a calculator.

Explore BrainMass

- Anthropology
- Art, Music, and Creative Writing
- Biology
- Business
- Chemistry
- Computer Science
- Drama, Film, and Mass Communication
- Earth Sciences
- Economics
- Education
- Engineering
- English Language and Literature
- Gender Studies
- Health Sciences
- History
- International Development
- Languages
- Law
- Mathematics
- Philosophy
- Physics
- Political Science
- Psychology
- Religious Studies
- Social Work
- Sociology
- Statistics

- Mathematics
- /
- Algebra
- /

Solve 5 SQRT 2050 Determining rational and irrational mathematical expressions without the use of a calculator.

2 divided by the square root of 3x plus the square root of 3x equals the square root of 3x plus 8

Factor: xy-4x+2y-8

Factor 15x^2 - 12xy + 18x^3y^4

The attached file contains a worked example from a textbook. Explain it.

Find and simplify each of the following values: a)f(-a) b)f(a^-1) c)f(sqrt a) d) F(a^2) Question: f(x)=sqrt 1+x^2+x^4

Solve for x: 10^x + 6(10^-x) = 7 and also: 3^3x+2 * 8^-x = 4

What is the value of y to make both solutions equal to each other? x-4=y 4x+2=y

Determine the total number of solutions (including complex and repeated) of the following equations. 1.) 4x^3 - 7x^2 + 5x - 9 = 0 2.) 8x^6 - 3x^4 - 11x^3 - 2x^2 + 4 = 0 3.) x^5 + 2x^3 - 4x^2 + 7x = 12 4.) -3x^4 + 2x^3 + 15x^2 - x + 1 = 8

Ronald and Rosa are hiking. Ronald hikes 4 miles per hour. Rosa hikes 5 miles per hour. Ronald leaves camp at 8 am for the trail. Rosa leaves camp at 10 am for the trail. At what time will Rosa catch up to Ronald? Where will they be on the trail? How many miles will they be from camp? If they keep hiking for another 2 hours, how

Assistance & Guidance needed on the following academic problem: The world GNP keeps rising with the world population. This is as it should be. However, the distribution of this wealth is also transforming, so that a minority are becoming very rich indeed, while both the numbers and the proportion living in relative (some s

What is 3n(8n to the 2nd power-2n)? How did you get this?

If z is an n-th term of 1, show taht 1+z+z^2+z^3+....+z^n-1=0. Solve the equation with n=5 and hence factorize 1+z+z^2+z^3+z^4 into linear factors with complex coefficient and then into quadratic factors with real coefficients.

Describe the steps in and/or define how to accomplish the following types of proofs: a. That two sets are equal. b. That two sets are disjoint. c. A proof by contra-positive. d. A proof by contradiction. e. A proof by Mathematical Induction. (Question is repeated in attachment)

Question in attachment is as follows: Consider all lines in the plane. If a relationship between 2 lines is defined by the expression that their slopes are equal, prove that this relationship is an equivalence relationship. If we consider the set of all lines in the plane, how would you uniquely identify the equivalence clas

Write a in terms of b for: a=(9^x) + 5 b= 3-(3^x)

If the lines ax-y=6 and 4x+(a+4)y=-6 are parallel, what is a=?

|x-4| + |x| = 8 what is the sum of the possible value(s) of x?

((x^2 +ax +b)/(x^2 +11x +28)) ((x^2 +4x -21)/(x^2 -9))= (x+2)/(x+3) What is a+b=?

Simplify (sqrt2 - (1/sqrt2))/(sqrt2 + (1/sqrt2))=?

Find the following limits using L'Hopital's rule. See attachment below.

Factor: 75+12x^2+60x

2^3 * 2^-4 (from Modern Engineering Mathematics 3rd Ed Ex 1.2.5.1(a))

How do I determine the cardinality of an infinitely large set (such as real numbers)? What is c and 2^c mean?