Find a and b ax-b ,-1
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Let X=[xy], then the first equation can be written, in matrix multiplication, as
[2−3][xy]=[−1]
Similarly, the second equation can be written as
[−55][xy]=[20]
By combining these two equations as a system, they can be written as
[2−5−35][xy]AX=[−120]=B
Now, if the above A has an inverse, then both sides can be left-multiplied by A−1 to get
AXA−1AXI2XX[xy]=B=A−1B=A−1B=A−1B=[2−5−35]−1[−120]
For the similar answer follow https://brainly.in/question/12762200 which I had answered first.
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