Find the value of x given that the matrix is a singular matrix.

Find the value of x given that the matrix is a singular matrix.

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x (x +7 ) + 12 = 0
x² + 7x +12 = 0
x² + 3x + 4x +12 = 0
x(x+3) +4 (x+3)=0
(x+3) (x+4) = 0
X= -3 or -4

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Kavungya answered the question on November 8, 2019 at 06:31

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