Question

Qual o valor de Y na equação |Y+2 2Y-1 3 4| (2×2) = |Y 2 8 3| (2×2) é=

Answer 1

$|Y+22Y-134|(2\cdot 2)=|Y283|(2+2)\\ \mid 23\cdot Y-134\mid \cdot 4=\mid 283\cdot Y\mid \cdot 4\\ \mid 23\cdot Y-134\mid \cdot 4\\ \mid 23\cdot Y-134\mid \\ 23\cdot Y-134\\ 4\\  \\  \\ \mid 283\cdot Y\mid \cdot 4\\ 4\\  \\  \\ 4\cdot \mid 23\cdot Y-134\mid =4\cdot \mid 283\cdot Y\mid \\ 4\cdot \mid 23\cdot Y-134\mid \\ 4\cdot \mid 283\cdot Y\mid$

$-4\cdot \mid 283\cdot Y\mid +4\cdot \mid 23\cdot Y-134\mid =0\\ 4\cdot \mid 23\cdot Y-134\mid -4\cdot \mid 283\cdot Y\mid =4\cdot \mid 283\cdot Y\mid -4\cdot \mid 283\cdot Y\mid \\ -4\cdot \mid 283\cdot Y\mid +4\cdot \mid 23\cdot Y-134\mid =0\\ -4\cdot \mid 283\cdot Y\mid +4\cdot \mid 23\cdot Y-134\mid \\ 0$

$4\cdot (-\mid 283\cdot Y\mid +\mid 23\cdot Y-134\mid )=0\\ 4\cdot (-\mid 283\cdot Y\mid +\mid 23\cdot Y-134\mid )\\ 0\\ 4=0\\ -\mid{283 \cdot Y}\mid+\mid{23 \cdot Y-134}\mid=0\\  \\  \\  0$

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