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2. Vectors r1=[5,7] and r2=[−28,20] are perpendicular. Put M=[r1,r2], B=[[−171,−18],[175,34]], and solve MT⋅X=B by multiplying it...

2. Vectors r1=[5,7] and r2=[−28,20] are perpendicular. Put M=[r1,r2], B=[[−171,−18],[175,34]], and solve MT⋅X=B by multiplying it by M on the left side.

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