Question

A-(a+x).(a-1)
B-(a-x).(a+1)
C-(a-x).(a-1)
D-(a+x).(a+1)
Me ajudem....

Answer 1

a)- (a+x)·(a-1)

= a²- a +xa -x

= a(a-1+x) - x

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b)- (a-x)·(a+1)

= a² + a - xa -x

= a(a+1-x) -x

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c)- (a-x)·(a-1)

= a² - a -xa +x

= a(a-1-x) +x

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d)- (a+x)·(a+1)

= a² + a +xa + x

a(a+1+x) +x

Boa sorte!

Answer 2

Resposta:

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