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Mathematics
Mariam Lowe
16 November, 23:54
Subtract. (-d2 + 12d - 4) - (-7d2 - 2d + 12) =
+4
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Sierra
17 November, 01:19
0
The answer would be 26d - 16
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Nathaly Grant
17 November, 02:17
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I am using d^2 instead of d2 as that seems written incorrectly.
Same for - 7d^2 instead of - 7d2.
Start by changing the signs in the 2nd parenthesis by changing the subtract sign to a plus.
(-d^2 + 12d - 4) + (7d^2 + 2d - 12)
Now combine like terms
(7d^2 - d^2) + (12d + 2d) + - 4 + - 12
6d^2 + 14d + - 16 (or 6d^2 + 14d - 16)
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