Question

(A-B-C)= Utilize a fórmula
(D)=Simplifique

Answer 1

a)
$x {}^{2} + 10xy + 25y {}^{2}$
b)
$81x {}^{2} y {}^{2} + 90xy + 25$
c)
${x}^{14} + 10 {x}^{8} + 25 {x}^{2}$
d)
$35x {}^{2}$