Answer to Question #349660 in Linear Algebra for Busi

Question #349660

Determine the value of the unknown in the given matrix equalities



(2 −1 x


4 7 0)


(x 3


−2 5


1 −4)


=


(4 −2


1 5 )


1
Expert's answer
2022-06-12T16:55:25-0400
"\\begin{pmatrix}\n 2 & -1 & x \\\\\n 4 & 7 & 0\n\\end{pmatrix}\\begin{pmatrix}\n x & 3 \\\\\n -2 & 5 \\\\\n1 & -4\n\\end{pmatrix}"

"=\\begin{pmatrix}\n 2x+2+x & 6-5-4x \\\\\n 4x-14 & 12+35\n\\end{pmatrix}"

"=\\begin{pmatrix}\n 3x+2 & 1-4x \\\\\n 4x-14 & 47\n\\end{pmatrix}"


"\\begin{pmatrix}\n 3x+2 & 1-4x \\\\\n 4x-14 & 47\n\\end{pmatrix}\\not=\\begin{pmatrix}\n 4 & -2 \\\\\n 1 & 5\n\\end{pmatrix}, x\\in \\R"

There is no solution.




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