1) a²(2a+5)/a= a*(2a+5)= 1/2*(2*1/2+5)= 1/2*(1+5)= 6/2= 3
2) 4a²(2a-1)/2a= 2a(2a-1)= -1/2*2*(-1/2*2-1)= -1*(-1-1)= -1*(-2)= 2
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1) a²(2a+5)/a= a*(2a+5)= 1/2*(2*1/2+5)= 1/2*(1+5)= 6/2= 3
2) 4a²(2a-1)/2a= 2a(2a-1)= -1/2*2*(-1/2*2-1)= -1*(-1-1)= -1*(-2)= 2