Question

resposta a) (k + 4)2 = 2 c) (x + 10y)2 = e) (5 - t)2 = g) (2x - 5y)2 = b) (3x + 5y) d) (x2 + 3y2) f) (5x - y)2 h) (x - 10y)? 2 -​

Answer 1

Resposta:

a) (k + 4)2 = 2

${k}^{2} + 8k + 16 = 2 \\ {k}^{2} + 8k + 16 - 2 = 0 \\ {k}^{2} + 8k + 14 = 0$

b) (3x + 5y)²

$9 {x}^{2} + 30xy + 25 {y}^{2}$

c) (x + 10y)2

${x}^{2} + 20xy + 100 {y}^{2}$

d) (x2 + 3y2)²

${x}^{4} + 6 {x}^{2} {y}^{2} + 9 {y}^{4}$

e) (5 - t)2

$25 - 10t + {t}^{2}$

f) (5x - y)2

$25 {x}^{2} - 10xy + {y}^{2}$

g) (2x - 5y)2

$4 {x}^{2} - 20xy + 25 {y}^{2}$

h) (x - 10y)²

${x}^{2} - 20xy + 100 {y}^{2}$