Question

Resolver os produtos notáveis:

a) (3x – (1/4))2

b) (2x – 5)3

c) (3a + 2b)3

d) (1/9) - (1/16)
Com os cálculos

Answer 1

Resposta:

a) 24x-2/4

b) 6x-15

c) 9a+6b

d) 7/144

Explicação:

a) (3x-(1/4))×2 =

(3x×2)-(1/4×2) =

(3x×2)-(1/4×2/1) =

(3x×2)-(1×2/4×1) =

6x-(2/4) =

(6x/1)-(2/4) =

(4÷1×6x)-(4÷4×2)/4 =

24x-2/4

b) (2x-5)×3 =

(2x×3)+(-5×3) =

6x-15

c) (3a+2b)×3 =

(3a×3)+(2b×3) =

9a+6b

d) (1/9)-(1/16) =

(144÷9×1)-(144÷16×1)/144 =

16-9/144 =

7/144