Question

alguem pode me ajudar ?

a) (3 + x)² d) (x + 2)² g) (5 + 3x)²

b) (x + 5)² e) (3x + 2)²

c) (c + y)² f) (2x + 1)²

Answer 1

a) (3+x)^2
3^2+2.3.x+x^2
9+6x+x^2
x^2+6x+9
b) (x+5)^2
x^2+2.x.5+5^2
x^2+10x+25
c) (c+y)^2
c^2+2.c.y+y^2
c^2+2cy+y^2
d) (x+2)^2
x^2+2.x.2+2^2
x^2+4x+4
e) (3x+2)^2
3x^2+2.3x.2+2^2
9x^2+12x+4
f) (2x+1)^2
2x^2+2.2x.1+1^2
4x^2+4x+1
g) (5+3x)^2
5^2+2.5.3x+3x^2
25+30x+9x^2
9x^2+30x+25