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Given A=[{:(2,2,-4),(-4,2,-4),(2,-1,5):}...

Given `A=[{:(2,2,-4),(-4,2,-4),(2,-1,5):}] and B=[{:(1,-1,0),(2,3,4),(0,1,2):}]`. Find A.B and use this to solve the system of equations y+2z=7,x-y=3,2x+3y+4z=17

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The correct Answer is:
`therefore x=2,y=-1 and z=4`
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