dayanirisr45
03.02.2020 •
Mathematics
Select the correct answer. what is the correct expansion of the binomial (x + y)5? a. x5 + 5x4y + 10x3y2 + 10x3y3 + 5xy4 + y5 b. x5 + 5x4y + 10x3y2 + 10x2y3 + 5xy4 + y4 c. x5 + 5x4y + 10x3y2 + 10x2y3 + 5xy4 + y5 d. x5 + 5x4y4 + 10x3y3 + 10x2y2 + 5xy + y5
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Ответ:
C. x^5 + 5x^4y + 10x^3y^2 + 10x^2y^3 + 5xy^4 + y^5
Step-by-step explanation:Wrong terms are bolded:
A. x5 + 5x4y + 10x3y2 + 10x3y3 + 5xy4 + y5
B. x5 + 5x4y + 10x3y2 + 10x2y3 + 5xy4 + y4
C. x5 + 5x4y + 10x3y2 + 10x2y3 + 5xy4 + y5
D. x5 + 5x4y4 + 10x3y3 + 10x2y2 + 5xy + y5
The sum of exponents should always be 5.
Ответ: