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$If the system of equation x + 2 y - 3 z = 1, (P + 2) z = 3, (2 P + 1) y + z = 2 is inconsistent, then the value of P is$

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-2

−12

-2 or−12

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Correct option is A

Δ=0⇒P=−2 or −12 Put, if P=−12, then Δ1=Δ2=Δ3=0∴P=−2

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If the system of equation x+2y−3z=1,(P+2)z=3,(2P+1)y+z=2 is inconsistent, then the value of P is

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$If the system of equation x + 2 y - 3 z = 1, (P + 2) z = 3, (2 P + 1) y + z = 2 is inconsistent, then the value of P is$