gugu1004
04.08.2019 •
Mathematics
Simplify: (3x^2 − 5xy + 2y^2) − (7x^2 − 3xy − 3y^2)
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Ответ:
-4x^2 - 2xy + 4y^2
Hope this helps! :)
~Zain
Ответ:
Distributive law, in mathematics, the law relating the operations of multiplication and addition, stated symbolically, a(b + c) = ab + ac; that is, the monomial factor a is distributed, or separately applied, to each term of the binomial factor b + c, resulting in the product ab + ac. (https://www.britannica.com/topic/distributive-law)
Associative law, in mathematics, either of two laws relating to number operations of addition and multiplication, stated symbolically: a + (b + c) = (a + b) + c, and a(bc) = (ab)c; that is, the terms or factors may be associated in any way desired. (https://www.britannica.com/topic/associative-law)
Here's a video that explains the basics: https://www.youtube.com/watch?v=x9hoPIMNPw4