Bai W.
asked • 05/07/21solve for x in the matrix
|x 3|
|2 x+16| = 74
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1 Expert Answer
Mark M. answered • 05/08/21
Tutor
4.9
(954)
Retired math prof. Very extensive Precalculus tutoring experience.
x(x+16) - (2)(3) = 74
x2 + 16x - 80 = 0
(x+20)(x-4) = 0
x = 4 or -20
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Mark M.
Do you know how to evaluate a matrix?05/07/21