Question

Efetue as operações a seguir:
a) ( x² + 5x + 6) + 2x(x + 2)
b) (x² - 7x + 10 ) - ( x - 2)
c) (2x² + 6x + 4 ) . ( x + 1)
d) ( x³ - 6x² + 11x – 6) + ( x2 +7x – 3)

Answer 1

Olá, boa noite!

(a) (x² + 5x + 6) + 2x(x + 2) =
x² + 2x² + 5x + 4x + 6 =
3x² + 9x + 6

(b) (x² - 7x + 10) - (x - 2) =
x² - 7x - x + 10 + 2 =
x² - 8x + 12

(c) (2x² + 6x + 4)(x + 1) =
2x³ + 2x² + 6x² + 6x + 4x + 4 =
2x³ + 8x² + 10x + 4

(d) (x³ - 6x² + 11x - 6) + (x² + 7x - 3) =
x³ - 6x² + x² + 11x + 7x - 6 - 3 =
x³ - 5x² + 18x - 9




Espero ter ajudado.
Bons estudos! :)