Simplify 198×198-102×102 using identities
Answers
Answered by
0
Answer:
28800
Step-by-step explanation:
=198*198-102*102
=(198)^2-(102)^2
=>by the formula (a^2-b^2)=(a+b)(a-b)
=(198+102)(198-102)
=300*96
=28800.
Answered by
0
Answer:
198²= (200-2)²= 200² + 2² -2x200x2
=40000 + 4 -800
39204...
102² = (100+2)² =100² + 2² +2 x100x 2
10000 + 4 + 200 = 10204
39204-10204= 29000
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