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4 votes
For all real numbers a and b, 2a • b = a2 + b2

True Or False ! Explain

User Bchang
by
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2 Answers

3 votes
this may be equal with this formula of

(a-b)^2 = a^2 -2ab +b^2
User Thab
by
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1 vote
this is true only if one of a or b is negative
(a-b)^2 is 0
a^2+b^2-2ab=0
a^2+b^2=2ab

(A-b)^2 is 0
if a-b=0
User Karmi
by
8.8k points

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