using the identity (a-b²)=(a²-2 AB + B2 )evaluate
1)(192)²
2)(389)²
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Answered by
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Answer:
1. write (192)² as( 200-8)²
2.write (389)²as(400-11)²
Step-by-step explanation:
1. (200-8)²=200²+8²-2(200)(8)
=40000+64-3200
= 36864.
2.( 400-11)²= 400²+11²-2(400)(11)
= 151321
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