3x2-8x-3=0 find x=9, 1/2, 3 find value
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1.3×2-8(9)-3
=6 - 72 - 3
= 6-75
= -69
2.3×2 - 8×1/2 - 3
= 6 - 4 - 3
= 6 - 7
= -1
3.3×2- 8×3 - 3
=6 - 24 - 3
=6 - 27
= -21
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