Which expression is equivalent to 3(x + 3) − (−4x2 − 4)?
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3x+9+8+4 is equivalent to that
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3(x+3)-(-4×2-4)
3x+9-(-8-4)
3x+9-(-12)
3x+9+12
3x+21.
This equation is equivalent.
3x+9-(-8-4)
3x+9-(-12)
3x+9+12
3x+21.
This equation is equivalent.
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