Question

g) m + 3x - y = ( para m = - 3. x = 2 e y = - 7)
h) b-4ac = (para a= 5, b= -3 e c= -8)
i) ab + C-b = (para a = -2.b = -5ec = -2)
i) 3x - y = (para x = 6 e y = -9)



urgenteeeeeee​

Answer 1

Resposta:

m+3x-y

-3+3×2-7=0

-3+6-7=0

-4=0

b-4ac

-3-4×5×(-8)=0

-3-4×40=0

-3-160=0

-163=0

ab+c-b

-2×(-5)+(-2)-(-5)=0

10+3=0

13=0

3x-y

3×6-(-9)=0

18+9=0

27=0