Question

A)(21)(4)(2)=
B)(7)(4)(-2)=
C)(12)(-3)(1)=
D)(-6)(4)(-3)=
E)(-7)(-2)(-1)=
F) (-3)(3)(-7)=

Answer 1

Respuesta:

A) (21)(4)(2) = 84(2) = 168

B) (7)(4)(–2) = 28(–2) = –56

C) (12)(–3)(1) = –36(1) = –36

D) (–6)(4)(–3) = –24(–3) = 72

E) (–7)(–2)(–1) = 14(–1) = –14

F) (–3)(3)(–7) = –9(–7) = 63

Explicación paso a paso:

Lo que se debe recordar es la ley de signos en la multiplicación:

(+)(+) = +

(+)(–) = –

(–)(+) = –

(–)(–) = +