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What is 6x * 5x + 8y and 4f * 8f + 2y - y + 8

User Jhondge
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\begin{gathered} 9) \\ 6x\cdot5x+8y=30x^2+8y \\ 10) \\ 4f\cdot8f\text{ +}2y-y+8=32f^2+y+8 \\ \end{gathered}

User Nachik
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