Question

1) Calcule utilizando produtos notáveis:
a) (m + n)² =
b) (x + 2y)² =
c) (3m - p)² =
d) (4 – x)² =
e) (1+x)(1 – x) =
f) (5 + x)(5 - x) =
g) (2x-n)²=
h) ( 3a+y) ²=
i) (4a-b)²=
j) (4+2x)²=
k) ( (4a+y) (4a-y)=
l) (x+7) (x-7)=

ME AJUDEM POR FAVOOOR ​

Answer 1

Resposta:

a) (m + n)²

${m}^{2} + 2mn + {n}^{2}$

b) (x + 2y)² =

${x}^{2} + 4xy + {4y}^{2}$

c) (3m - p)² =

${9m}^{2} - 6mp + {p}^{2}$

d) (4 – x)² =

${x}^{2} - 8x + 16$

e) (1+x)(1 – x)

$1 - x + x - {x}^{2} \\ 1 - {x}^{2}$

f) (5 + x)(5 - x)

$25 - 5x + 5x - {x}^{2} \\ 25 - {x}^{2}$

g) (2x-n)²

${4x}^{2} - 4nx + {n}^{2}$

h) ( 3a+y) ²=

${9a}^{2} + 6ay + y {}^{2}$

i) (4a-b)²

${16a}^{2} - 8ab + {b}^{2}$

j) (4+2x)²

${4x}^{2} + 16x + 16$

k) ( (4a+y) (4a-y)

${16a}^{2} - 4ay + 4ay - {y}^{2} \\ {16a}^{2} - {y}^{2}$

l) (x+7) (x-7)

${x}^{2} - 7x + 7x - 49 \\ {x}^{2} - 49$