Thahani
05.05.2021 •
Mathematics
What is the measure of each angle of a regular 21-gon? If necessary, round to the
nearest tenth.
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Ответ:
What are the solutions of the equation x4 – 5x2 – 14 = 0? Use factoring to solve.
<YOUR ANSWER
STEPS:
REWRITE THE PROBLEM WITH: x² and u²=
u²-5u-14=0
SOLVE:
u=7, u=-2