If # is an operation such that for any integers a<br />and b, we have: a#b= a × b-<br />2 × a × b + b × b (-a)×b+b×b<br />then find (a)4#(-3) (b)(-7)#(-1)
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a#b= a × b-<br />2 × a × b + b × b (-a)×b+b×b<br
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