Question

7) ) Calcule utilizando produtos notáveis:

A) (10y-x)²

B)(5x-2y)²

C)(4m²-1)²

D)(3m²-4n)²

E)(2-m³)²

F)(x+9).(x-9)

G)(m-3).(m+3)

H)(2a-5).(2a+6)

I)(3x+5).(3x-5)



Rápido

Answer 1

a)

${(10y - x)}^{2} = 100 {y}^{2} - 20yx + {x}^{2}$

b)

${(5x - 2y)}^{2} = 25 {x}^{2} - 20xy + 4 {y}^{2}$

c)

${(4 {m}^{2} - 1) }^{2} = 16 {m}^{4} - 8 {m}^{2} + 1$

d)

${(3 {m}^{2} - 4n) }^{2} = 9 {m}^{4} - 24 {m}^{2} n + 16 {n}^{2}$

e)

${(2 - {m}^{3} )}^{2} = 4 - 4 {m}^{3} + {m}^{6}$

f)

$(x + 9)(x - 9) = {x}^{2} - 81$

g)

$(m - 3)(m + 3) = {m}^{2} - 9$

h)

$(2a - 5)(2a + 6) = 4 {a}^{2} + 2a - 30$

i)

$(3x + 5)(3x - 5) = 9 {x}^{2} - 25$