Question

1)Efetue como achar melhor.


(x+7)^2

(5+2m)^2

(a+3x)^2

(10x+y)^2

(5x^2 +1)^2

(11+P9)^2

(X+0,5)^2

(X+1/2)^2

Answer 1

a) (x+7)•(x+7)=> x^2+7x+7x+7^2=> x^2+14x+49

b) (5+2m)•(5+2m)=> 5^2+5•2m+5•2m+(2m)^2=> 4m^2+20m+25

c) a^2+6ax+9x^2

d) y^2+20xy+100x^2

e) (5x^2)^2+5x•1+5x•1+1^2=> 25x^4+10x^2+1

f) 81P^2+198p+121

g) x^2+x+1/4

h)x^2+x+1/4