Question

resolva as expressões onde X= 4 e Y= 3
2X - y

X² + y

2Y - x

2x+y- xy

2xy²+3x-y²

por favor gente ​

Answer 1

Resposta:

X= 4 e Y= 3

2X - y =

2 × 4 - 3 =

8 - 3 =

5

X² + y =

4^2 + 3 =

4 × 4 + 3 =

16 + 3 =

19

2Y - x

2 × 3 - 4 =

6 - 4 =

2

2x + y - xy =

2 × 4 + 3 - 4 × 3 =

8 + 3 - 12 =

11 - 12 =

-1

2xy ²+ 3x - y²

2 × 4 × ( 3 )^2 + 3 × 4 - 3^2

8 × 9 + 12 - 9 =

72 + 3 =

75

Answer 2

Resposta:

(2x4) - 3 = 8 - 3 = 5

4² + 3 = 16 + 3 = 19

(2x4) + 3 - (4x3) = 8 + 3 - 12 = -1

(2x4x3²) + (3x4) - 3² = 72 + 12 - 9 = 75