Question

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Answer 1

Respuesta:

1) 11

2) 15

3) 1/2

4) - 10/2

Explicación paso a paso:

Cuando dos monomios son semejantes el grado relativo de los dos monomios serán iguales.

1)

xᵃ⁻¹ = x⁵

a - 1 = 5

a = 6

y⁹ = yᵇ⁺⁴

9 = b + 4

5 = b

a + b = 6 + 5 = 11

2)

A(x) = 3x + 2

A(2) = 3(2) + 2

A(2) = 6 + 2

A(2) = 8

B(A(2)) = B(8)

B(x) = 5x - 25

B(8) = 5(8) - 25

B(8) = 40 - 25

B(8) = 15

B(A(2)) = B(8) = 15

3)

P(x + 3) = P(-3)

x + 3 = -3

x = -6

P(-3) = (x - 3) / 3x

P(-3) = (-6 -3) / 3(-6)

P(-3) = -9 / - 18

P(-3) = 9 / 18

P(-3) = 1/2

4)

M(x; y) = (3x - 2y) / 2

M(5; 7) = ( 3(5) - 2(7) ) / 2

M(5; 7) = ( 15 - 14 ) / 2

M(5; 7) = 1/2

M(x; y) = (3x - 2y) / 2

M(7; 5) = ( 3(7) - 2(5) ) / 2

M(7; 5) = ( 21 - 10 ) / 2

M(7; 5) = 11 / 2

M(5; 7) - M(7; 5)

1/2 - 11/ 2       → fracciones con mismo denominador → 1 - 11 = -10

- 10/2