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10. If A = 2i – 2j and B = 2k, then A.B = ___​

Answer»

ANSWER:

ik=jk

Explanation:

A=2i-2j B=2K

(2i-2j)(2k)

2i2k-2j2k=0

2(IK)-2(jk)=0

2(ik)=2(jk)

ik=jk



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