Question

Reduza os termos semelhantes:
A) (Y-2)²+Y²-3+(Y+5)²
B) (M+N)x(N+M)+(M+N)²

Answer 1

a) $(y-2)^{2} + y^{2} -3+ (y+5)^{2}$
     $y^{2} -4y+4[tex]+y^{2}$-3+ y^{2}+ 10y+25[/tex]
     $3 y^{2} +6y+26$

b)  $(m+n)(m+n)+ (m+n)^{2} = (m+n)^{2}+(m+n)^{2}=2*(m+n)^{2}$