Question

quem puder ajudar agradeço​

Answer 1

Resposta:

A = X^2 + 3X - 2

B = X + 2

C = X - 3

a)

A . B

A = X^2 + 3X - 2

B = X + 2

(X^2 + 3X - 2) . (X + 2)

X^3 + 2X^2 + 3X^2 + 6X - 2X - 4

X^3 + 5X^2 + 4X - 4

A . C

A = X^2 + 3X - 2

C = X - 3

(X^2 + 3X - 2) . (X - 3)

X^3 - 3X^2 + 3X^2 - 9X - 2X + 6

X^3 - 11X + 6

(A.B) + (A.C)

(X^3 + 5X^2 + 4X - 4) + (X^3 - 11X + 6)

2X^3 + 5X^2 - 7X + 2

b)

B + C

B = X + 2

C = X - 3

(X + 2) + (X - 3)

2X - 1

A.( B + C)

A = X^2 + 3X - 2

(X^2 + 3X - 2) . (2X - 1)

2X^3 - X^2 + 6X^2 - 3X - 4X + 2

2X^3 + 4X^2 - 7X + 2