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Respondido

ME AJUDEM PFVVV

A) (√2+3×)²

B) (√x+2y).(1+5)

C) ( 1/3 - xy)²

D) (x+√5).(3+b).(3-b)

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Resposta :

Explicação passo-a-passo:

a) (√2+3×)²= 2+2√2.3x+9x²

b) (√x+2y).(1+5)= √x+5√x+2y+10y= 6√x+12y

c) ( 1/3 - xy)²= 1/9 - 2/3.xy+x²y²

d) (x+√5).(3+b).(3-b)= (x+√5).(9-b²)= 9x-b²x+9√5-b²√5

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