In ΔXYZ, ∠X=82° and ∠Y=84°. ∠XWZ=90° and XY=97. Find the length of XW to the nearest integer.

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Ответ:

Narutokun

23.04.2021

Mathematics

a^3+3a^2b+3ab^2+b^3

Step-by-step explanation:

If have (a+b)^3 , we can solve this as:

(a+b)(a+b)(a+b)

So, applying distribution with the first two factors and simplifying, we get:

$(a^2+ba+ab+b^2)(a+b)\\(a^2+2ab+b^2)(a+b)$

Then, multiplying both expressions and simplifying again, we get:

$a^3+a^2b+2a^2b+2ab^2+b^2a+b^3\\a^3+3a^2b+3ab^2+b^3$

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