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)
The World at a Crossroads: Donald Trump’s Presidency and Its Global Impact
"The World at a Crossroads: Donald Trump’s Presidency and Its Global Impact" When Donald Trump took the oath of office in January 2017, he promised a revolution in the way America interacted with the world. With his bold slogan, “America First,” Trump tore up the rulebook, upended norms, and redefined the United States’ role on the global stage. His presidency, marked by unorthodox decisions and sharp rhetoric, left an indelible impact on geopolitics, trade, and international diplomacy. Disrupting Global Alliances From the start, Trump made clear his disdain for what he saw as unfair burdens on the United States in global alliances. NATO, the bedrock of transatlantic security, came under fire as Trump accused member states of “freeloading.” His demand for increased defense spending sparked tension but also yielded results, as European nations stepped up their contributions. At the same time, Trump’s decision to withdraw the U.S. from key international agreements, such as...
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