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Tyrone Mcintyre
Mathematics
5 August, 20:45
Thw sum of 12x^2+9x^2
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Evangeline Allison
5 August, 21:05
0
21 x^2
Step-by-step explanation:
12x^2+9x^2
Combine like terms
x^2 (12+9)
x^2 (21)
21 x^2
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