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What polynomial identity should be used to prove that 21=25-4?. A. Difference of cubes B. Difference of Squares C. Square of Binomial D. Sum of Cubes

What polynomial identity should be used to prove that 21=25-4?. A. Difference of cubes B. Difference of Squares C. Square of Binomial D. Sum of Cubes
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What polynomial identity should be used to prove that 21=25-4?. A. Difference of cubes B. Difference of Squares C. Square of Binomial D. Sum of Cubes

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User Danem
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2 Answers

2 votes

Answer:b

Step-by-step explanation:took test

answered
User Shakeen
by
7.8k points
4 votes
21 = 25 - 4
21 = 5² - 2²
21 = ( 5 - 2 ) · ( 5 + 2 )
21 = 3 · 7
21 = 21
Answer: B ) Difference of Squares
answered
User Alex Hill
by
8.3k points
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