Replace R2 by R2 +(-6)R1. 19 -3 -5 6 7 7 -9 9 8 R2 +(-6)R, =

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A: we solve the question . r^-1 .r=1.

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Q: Replace R2 by R2 +(-6)R,. 1 4 -1 6 1 -4 7 1 8.

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Q: (z^3-7z+8) - (5z^3+9z-1)

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Q: 4 + 5z when z = 12 8r 10 9. 15 when r = 27 II - 8

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Q: 2x when x = 12 and y = -3

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Q: 32) -3x2 + 3x - 5s0 32) C) (-«, «) D) Ø

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Q: Replace R2 by R2 + (-5)R,. 13 -9 -8 5 6 6 -7 4 9 8. R2 +(-5)R, :

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Q: 4. To the left of z = 2.05 -2 -1 3. 2.

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Q: 2(3r2 + 4r +2) – 3(-r2 +4r – 5)

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Q: 4. f(r) = r² + 1;(-2, 2|

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Q: (- 4, - T< 4, 0<x

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