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Anonymous
$10x2/3
Sydni Winckler ∙
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(10x + 3)(x - 1)
-2x(x + 3)(x + 2)
10x2 - 64 = 36 + 6x2; whence, 4x2 - 100 = 0, x2 = 25, and x = ±5.
(2x + 1)(5x - 6)
A non-square matrix cannot be inverted.