A B C 3 Expansion Formula
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A b c 3 expansion formula. You didn t specify if a b c are all distinct. Get the list of basic algebra formulas in maths at byju s. Therefore a b c a 2 b 2 c 2 ab ac bc 0. The coefficient of the cubes is therefore 1.
Now suppose a 2 b 2 c 2 ab ac bc 0. By expanding given equation using expansion formula we can get the. A b c 3 formula. Next we consider the a 2 terms.
A b c 3 a 3 b 3 c 3 6abc 3ab a b 3ac a c 3bc b c summary a b c 3. Davneet singh is a graduate from indian institute of technology kanpur. This is just multiplying out and bookkeeping. You can re write this as.
We can choose three a s for the cube in one way c 3 3 1 or we can choose an a from the first factor and one from the second and one from the third being the only way to make a3. A 3 b 3 c 3 3abc a b c a 2 b 2 c 2 ab ac bc. So either a b c 0 or a 2 b 2 c 2 ab ac bc 0. Find the coefficient of in the expansion of 1 x x 2 x 3 11.
It s the same for a b and c of course 3a 2 b 3a 2 c. A 3 b 3 c 3 plus 3 of each term having one variable and another one squared like ab 2 b 2c all 6 combinations of those then plus 6abc and that s it. If you have any issues in the a b c 3 formulas please let me know through social media and mail. A plus b plus c whole cube is most important algebra maths formulas for class 6 to 12.
He provides courses for maths and science at teachoo. By assumption a 3 b 3 c 3 3abc so the left hand side is 0.