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9(a^2+1)^2- 4(b^2-1)^2​

User Mat Jones
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1 Answer

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9( {a}^(2) + 1) {}^(2) - 4( {b}^(2) - 1) {}^(2)


= 9( {a}^(4) + 1) - 4( {b}^(4) + 1)


= {9a}^(4) + 9 - {4b}^(4) - 4


= {9a}^(4) - {4b}^(4) + (9 - 4)


= {9a}^(4) - {4b}^(4) + 5

User Erken
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