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Customary Unit Conversions | MathHelp.com
By MathHelp.com
This lesson covers complex numbers. Students learn that a complex number is the sum or difference of a real number and an imaginary number and can be written in a + bi form. For example, 1 + 2i and -- 5 - i root 7 are complex numbers. Students then learn to add, subtract, multiply, and divide complex numbers that do not contain radicals, such as (5 + 3i) / (6 - 2i). To divide (5 + 3i) / (6 - 2i), the first step is to multiply both the numerator and denominator of the fraction by the conjugate of the denominator, which is (6 + 2i), then FOIL in both the numerator and denominator, and combine like terms.
Learn Greatest Common Factor (GCF) & Least Common Multiple (LCM) - [7]
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!
Multiply binomials by polynomials
By Khan Academy
Sal finds the values of coefficients a and b that make (2x+4)(5x-9)=ax^2+bx-46 true for all x-values.
Multiply binomials by polynomials
By Khan Academy
Sal expresses the area of a rectangle whose height is y^2-6y and width is 3y^2-2y+1.
Multiply binomials by polynomials
By Khan Academy
Sal expresses the product (10a-3)(5a^2 + 7a - 1) as 50a^3+55a^2-31a+3.
Multiply binomials by polynomials
By Khan Academy
Sal expresses the product (3x+2)(5x-7) as 15x^2-11x-14.
[3.MD.7b-1.0] Multiply to find Area - Common Core Standard
By Freckle education
Multiply side lengths to find areas of rectangles with whole-number side lengths in the context of solving real world and mathematical problems
Transitioning from counting to multiplying to find area | 3rd grade | Khan Academy
By Khan Academy
finds the area of a rectangle both by counting unit squares and multiplying side lengths
Multiplying and dividing with integers
By MathPlanetVideos
alculate the following expressions (−4)⋅(−12),−123
Finding Unknown Factors in Multiplication Equations: 3.OA.4
By Tenmarks Amazon
Students learn to find unknown factors in multiplication equations using arrays and repeated addition.
12 - The Factor Theorem, Part 1 (Factoring Polynomials in Algebra)
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!