Question

Arme e Efetue (Resolva):
É urgenteeeeeeeeeeee

a) $(\frac{3y}{2}-3y-2)+( \frac{2 y^{2} } {3}+ \frac{1y}{4}+ \frac{1}{2} )$
b)$( \frac{x}{2} - \frac{3xy}{4} + \frac{y}{3} )-( \frac{3y}{2} - \frac{xy}{3} -2x)$
c)$x^{2} +( -\frac{1x}{2}-2)- ( -\frac{1}{2}+x +\frac{1 x^{2} }{3} )$
d)$2y-[-3xy+(2x+5y)-(-4xy+x)]$
e)$( 3x^{2}-5x+2)-( x^{2} +6x-4)+(5x-7)$

Urgenteeeeeeeeeeeee

Answer 1

a) (3y/2 - 3y - 2) + (2y²/3 + 1y/4 + 1/2) =
    ( -3y/2 - 2) + (2y²/3 + 1y/4 +1/2) =
    -2 +1/2 = -2y²/3 + 3y/2 - 1y/4 =
   -3/2 = -2y² + 5y/4
   -3/2.3.4 = -2y² + 5y
   -36/2 = -2y² + 5y
   -18 = -2y² + 5y
   -2y² + 5y +18 = 0