. If a = 3, b = 1 and c = -2, find the value of a? + b2 +
c2 + 2ab +2bc +2ca.
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Answer:
=answer is -6
Step-by-step explanation:
=c^2+2ab+2bc+2ca =(-2)^2 +2(3)(1)+2(-2)(1)+2(-2)(3)
=4+6-4-12
=10-16
=-6
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