August 2023 2 7 Report
1. Determine o valor das expressões algébricas:
A) 2x-4y-10 quando--> x= 1 e y= 2

B) -3a+a^2-3 quando--> a= -2

C) xy+y^2+3y quando--> x= 1 e y= -3

D) -10+a-3b+b^2 quando-->a= -4 e b
= -1

E)-5a-b+7a quando--> a= 0 e b= -4
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