Question

a) (+5x) . (–4x2) =
b) (–2x) . (+3x) =
c) (+5a) . (+4a) = -
d) (–a) . (+6a) = -
e) (+2a) . (–7b) =
f) (–2x) . (–3y) =
g) (+3x) . (–5y) =
h) (–3ab) . (–2a) =
i) (+8x) . (-3x³)

Answer 1

Explicação passo a passo:

a)

(+5x) . (–4x2) =

5(−4²)

−20²

−20³

b)

(–2x) . (+3x) =

−2(3)

−2⋅3

−6

−6²

c)

(+5a) . (+4a) =

(5)(4)

5(4)

5⋅4

20

20²

d)

(–a) . (+6a) = -

(−)(6)

−(6)

−⋅6

−6

−6²

e)

(+2a) . (–7b) =

(2)(−7)

2(−7)

2(−7)

−14

f)

(–2x) . (–3y) =

(−2)(−3)

−2(−3)

6

g)

(+3x) . (–5y) =

(3)(−5)

3(−5)

−15

h)

(–3ab) . (–2a) =

(−3)(−2)

−3(−2)$x^{4}$

6  

6²

i)

(+8x) . (-3x³)

(8)(−3³)

8(−3³)

−24³

−24$^{4}$