Simplify: (2a-1)²-(2a-3)(2a+1)
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Answered by
1
Step-by-step explanation:
i think it is best answer to 4
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Answered by
0
Answer:
4
Step-by-step explanation:
(2a - 1)² - (2a-3)(2a+1)
= (2a - 1)² - {(2a-3)(2a+1)}
= (2a)² - 2(2a)(1) + 1² - {2a(2a+1) -3(2a+1)}
= 4a² - 4a + 1 - {4a² + 2a -6a -3)
= 4a² - 4a + 1 - {4a² -4a -3}
= 4a² - 4a + 1 -4a² +4a +3
= 4a² - 4a² +4a - 4a + 1 + 3
= 0 + 0 + 4
= 4
Hence the answer is 4.
hope it helps.
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