please help Fe ill mark as brainlish
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X^(2a+7) + X^(2a-8)
= X^(2a+7+2a-8)
= X^(4a-1)
= X^(2a+7+2a-8)
= X^(4a-1)
Shubhangisoni:
sorry 4 (2b+b)^(2)-(a-b)^(2)
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