Practice Simplifying Algebraic Expressions Videos - Free Educational Videos for Students in K - 12

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Simplifying Radicals With Variables, Exponents, Fractions, Cube Roots - Algebra


By The Organic Chemistry Tutor

This algebra 1 & 2 video tutorial shows you how to simplify radicals with variables, fractions, and exponents that contains both square roots, cube roots, and variables such as x, y, and z. This video contains plenty of examples and practice problems.Here is a list of topics: 1. Simplifying Radical Expressions With Variables & Exponents 2. Simplifying Radicals With Fractions & Variables 3. Radicals With Square Roots & Cube Roots 4. Radical Expressions with X, Y, and Z 5. Absolute Value - Simplifying radical expressions

Expressions with unknown variables


By Khan Academy

Sal solved a few examples where we need to evaluate an expression, but we don't know the individual variable values.

Expressions with unknown variables 2


By Khan Academy

A few more examples where Sal evaluates expressions with multiple unknown variables.

Manipulating trig expressions with pythagorean identities


By Khan Academy

Sal reviews all the different trigonometric angle addition identities: sin(a+b), sin(a-c), cos(a+b), cos(a-b), cos(2a), and sin(2a).

Recognizing rational and irrational expressions


By Khan Academy

Sal shows how to determine whether the following expressions are rational or irrational: 9 + ������������������(45), ������������������(45)/ (3*������������������(5)), and 3*������������������(9).

Manipulating trig expressions with pythagorean identities


By Khan Academy

Sal rewrites various trigonometric expressions using the Pythagorean identity and other trig identities.

DEPRECATED Simplifying rational expressions 4


By Khan Academy

Sal solves the following problem:������������Given a rectangle with length a^2+6a+27 and width a^2-9, write the ratio of the width to the length as a simplified rational expression.

DEPRECATED Simplifying rational expressions 4


By Khan Academy

Sal������������simplifies and states the domain of (2x^2+13x+20)/(2x^2+17x+30).

Equivalent forms of exponential expressions


By Khan Academy

Sal simplifies the expression 10*9^(0.5t+2)*5^(3t) as 810*375^t.

Equivalent forms of exponential expressions


By Khan Academy

Sal rewrites (1/32)*2^t as 32*1024^(t/10-1).

Equivalent forms of exponential expressions


By Khan Academy

Sal simplifies the expression 10*9^(0.5t+2)*5^(3t) as 810*375^t.

Equivalent forms of expressions with complex numbers


By Khan Academy

Learn how expressions of the form x^2+y^2 can be factored into linear factors. This would not be possible without the aid of complex numbers!

Equivalent forms of exponential expressions


By Khan Academy

Sal rewrites (1/32)*2^t as 32*1024^(t/10-1).

Simplify numerical radical expressions with multiple terms


By Khan Academy

Sal shows how to rationalize the denominator of the expression (16+2x^2)/(8).

Equivalent forms of expressions with complex numbers


By Khan Academy

Sal factors 36a^8+2b^6 as (6a^4-i*������������������2b^3)(6a^4+i*������������������2b).

Simplify numerical radical expressions with multiple terms


By Khan Academy

Sal shows how to manipulate expressions like 1/2 and 12/(2-5) so there's no radical in the denominator. This is called rationalizing the denominator.45

Evaluating function expressions


By Khan Academy

Sal evaluates -2*f(-6)+g(1) given the graphs of f and g.

Simplify rational expressions using advanced factorization methods


By Khan Academy

Sal������������simplifies and states the domain of (2x^2+13x+20)/(2x^2+17x+30).

Solve equations with two rational expressions


By Khan Academy

Sal solves the following equation and eliminates the resulting extraneous solution: (x^2)/(x+2)=4/(x+2).