(a-b+c)2=? ( )
a)a2+b2+c2+2ab+2bc+2ca
b)a2+b2+c2+2ab-2bc-2ca
c)a2+b2+c2-2ab+2bc-2ca
d)a2+b2+c2-2ab-2bc+2ca
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10
Answer:
(d) if it help you then like it
Answered by
7
Answer:
D. a²+b²+c²-2ab-2bc+2ac
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