A⁴+ B⁴ + 2a ²b²+2a⁴ -7 b⁴-4a²b²+ 2a⁴-3b⁴
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A⁴+ B⁴ + 2a ²b²+2a⁴ -7 b⁴-4a²b²+ 2a⁴-3b⁴ Please write your full qwestion.....
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