GUYS PLEASE HELP!!...HAVING DOUBT IN SIMPPLIFICATION...
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Step-by-step explanation:
1)- 4a²+a(a+3)+3a(2a²-1)+4
=> 4a²+a²+3a+6a³-3a+4
=>4a²+a²+6a³+4
2)- x(y-z)+y(z-x)+z(x-y)
=> xy-xz+yz-yx+zx-zy
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