Question

Pfv gente tentem responder com urgência obg





Simplifique as expressões

a) (x-3)²-(x-2)•(x+2)-(x+1)³
R:


b) (2x-3y)•(2x+3y)-(3x-2y)²
R:


c) 3(m-1)²+2(1+m)•(1-m)
R:


d) (y-3)²-(3y+2)²+2(y+4)•(y-4)

Answer 1

a)

$x^{2}$-9 - $x^{2}$+2x-2x-4 - $x^{3}$ + 1

$x^{3}$-14

b)

$5x^{2}$ + 4x6y - $5y^{2}$

c)

$m^{2}$+4m+1

d)

$3y^{2}$-13y-29