What is the absolute minimum and relative maximum of 4 y=-x to the power of 4+5x squared-4

The British highly taxed the American colonists so much that the American colonists couldn't afford to buy stuff. In return, the American colonists didn't buy anything from the British and the British couldn't pay off their huge debt and therefore had to do something, and they declared war on the colonists.

The American colonists fought back with George Washington as their captain and won. Then, America became an independent state from Britain.The British highly taxed the American colonists so much that the American colonists couldn't afford to buy stuff. In return, the American colonists didn't buy anything from the British and the British couldn't pay off their huge debt and therefore had to do something, and they declared war on the colonists.

The American colonists fought back with George Washington as their captain and won. Then, America became an independent state from Britain.

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