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Multiplying and simplifying rational expressions | Algebra II | Khan Academy
By Khan Academy
Khan Academy presents Multiplying and Simplifying Rational Expressions, an educational video resource on math.
Simplifying rational expressions 3 | Polynomial and rational functions | Algebra II | Khan Academy
By Khan Academy
Khan Academy presents Simplifying Rational Expressions 3, an educational video resource on math.
Combining like terms with rational coefficients
By Khan Academy
Learn how to simplify algebraic expressions by combining like terms. The expressions in this video have decimal and fraction coefficients.
Adding and subtracting polynomials | Algebra Basics | Khan Academy
By Khan Academy
This video from Khan Academy features an example problem on simplifying an algebraic expression by subtracting two polynomials.
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.
Composing expressions
By MathPlanetVideos
Write an expression that describes the situation: Anna and her parents are going to the movies. Each ticket costs $8 and Anna also wants popcorn which is an additional $3. How much did they pay.
Expressions of Quantity (Part 1)
By Smrt English
This video introduces count and uncount/noncount nouns and presents how to use the expressions "much" and "many".
Expressions of Quantity (Part 2)
By Smrt English
This lesson presents when to use popular expressions of quantity such as "lots of, alot of, a few, a little"
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).
Evaluate expressions
By MathPlanetVideos
Evaluate the following expression for x = 2, y = 5 and z = 4 4x+(7−z)−6y