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Naddik [55]
3 years ago
5

If 3x - 1 = 11, what is the value of x2 + x?

Mathematics
1 answer:
Alex3 years ago
6 0
3x -1 = 11
3x = 11 + 1
3x = 12
x = 4
I take it by, x2 + x, you mean 2x + x, since x = 4, then 
2x + x = 2(4) + (4) = 8 + 4 =12 
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