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Learn how to factor the difference of cubes with Khan Academy's advanced polynomial factorization methods.
(such as The formula for difference of cubes is good to know. Sometimes we are finding the difference of literal 3D objects and Difference of cubes is SOAP. Same Opposite Always Positive.
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The cube root of a number is the factor that we multiply by itself three times to get that number. The symbol for cube root is A 3 . Finding the cube root of a number is the opposite of cubing a number.
Volume and surface area help us measure the size of 3D objects. We’ll start with the volume and surface area of rectangular prisms. From there, we’ll tackle trickier objects, such as cones and spheres.
Sal factors p(x)=2x^5+x^4-2x-1 as (2x+1)(x^4-1) using grouping. Then he further factors (x^4-1) as (x^2+1)(x+1)(x-1) using the special product form of difference of squares.
Learn about a factorization method called "grouping." For example, we can use grouping to write 2x²+8x+3x+12 as (2x+3)(x+4).
Math: Pre-K - 8th grade; Pre-K through grade 2 (Khan Kids) Early math review; 2nd grade; 3rd grade; 4th grade; 5th grade; 6th grade; 7th grade; 8th grade; 3rd grade math (Illustrative Math-aligned)
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Based on past experience, we can make reasonable estimates of the likelihood of future events.