Simplify
pls help me. correct and step by step answer.
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Answer:
cross multiply = a+3(a²+10a+ 21)
a²-1( a²+6a-7)
=(a³+10a²+21a)+(3a²+ 30a+63)
Step-by-step explanation:
a³+40a²+51a+63
=(a⁴+6a³-7a²)+(-1a²-6a+7)
a⁴+6a³-8a²-6a+7
=a³+40a+51a+63=a⁴+6a³-8a²-6a+7
Then solve this equation
I hope you would understand
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