Mathematics: 2! 6! /2! 5! simplify as much as possible

Step-by-step explanation:Note: I replaced all cos^2x terms using the identity...

2! 6! /2! 5! simplify as much as possible - id26253236283, leslymejiaquiroz1

EmmaKozlewski4907

10.06.2020

$\frac{2!6!}{2!5!}$
$\frac{6!}{5!}$
$\frac{6*5*4*3*2*1}{5*4*3*2*1}$

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marcus5266

11.10.2020

Step-by-step explanation:

$\cos^{4} x - \sin^{4} x$

$= ( \cos^{2} x + \sin^{2} x)( \cos^{2} x - \sin^{2} x)$

$= (1 - \sin^{2} x + \sin^{2} x)( 1 - \sin^{2} x - \sin^{2} x)$

$= 1 - 2\sin^{2} x$

Note: I replaced all cos^2x terms using the identity

$\cos^{2} x = 1 - \sin^{2} x$

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