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Answer:

[tex]1.5x (1.5 + 4y + 3) - 4y(1.5x + 4y + 3) - 4.5 + 12y \\ = > 2.25x {}^{2} + 6xy + 4.5x - 16y {}^{2} - 12y - 4.5x + 12y \\ = > 2.5x {}^{2} + 6xy - 6xy + 4.5x + 12y - 12y - 16y {}^{2} \\ = > 2.25x {}^{2} + 0 + 0 + 0 - 16y {}^{2} = > 2.25x {}^{2} - 16y {}^{2} [/tex]

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Answer: 1.5 has to be.

Step-by-step explanation: no explanation.

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