Simplify 65*55 using identity p^2-q^2 = (p+q)(p-q)
Answers
Answered by
0
Step-by-step explanation:
65×55
(65)^2-(55)^2=(65+55)(65-55)
4225- 3025 =(120)(0)
1200=0
0
Answered by
8
Answer:
3575
Step-by-step explanation:
=(60+5)(60-5)
=60(60-5)+5(60-5)
=3600-300+300-25
=3600-25
=3575
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