Phân tích đa thức x^4 + 1 thành nhân tử
Phân tích đa thức x4 + 1 thành nhân tử. Giúp mình với ạ?
Giải:
=x4+2x2+1-2x2
=(x2+1)22x2
=(x2+1)2-(
x)2
=(x2+x+1)(x2-x+1)
CNN's Brianna Keilar breaks down 37 times Trump was soft on Russia.
President Donald Trump has an Achilles' heel when it comes to Russia. Over the years, he's made no secret that he has a soft spot for the country and its authoritarian leader, President Vladimir Putin. Trump has proved that he is willing to reject widely held US foreign policy views and align himself with the Kremlin on everything from Russian interference in US elections to the war in Syria. Most recently, Trump has denied the veracity of US intelligence reports accusing Russia of paying bounties to Taliban fighters to kill US troops in Afghanistan. Pressed on the topic during an interview with Axios that was released on Wednesday, Trump said he did not raise the issue during a recent phone call with Putin, and continued to suggest that the reports are "fake news." During the 2016 campaign, Trump's ties to Russians were so concerning that the FBI believed there was good reason to investigate potential collusion between his 2016 campaign an...
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