Question

CALCULE O PRODUTOS NOTÁVEIS
A) (10X+Y)²=
B)(3Y+3A)²=
C)(-5+N)²=

Answer 1

$(10x+y)^2=100x^2+20xy+y^2$

$(3y+3a)^2=9y^2+18ya+9a^2$

$(-5+n)^2=25-10n+n^2$

Answer 2

A) (10X+Y)²
(10x)² +2.(10x).(y) +(y)²
100x² +20xy +y²

ou 

(10x +y) . (10x +y)
100x² + 10xy + 10xy + y²
100x² + 20xy + y²

B)(3Y+3A)²
(3Y)² +2.(3Y).(3A) + (3A)²
9Y² +18AY + 9A²

ou

(3Y +3A) . (3Y + 3A)
9Y² +9AY +9AY +9A²


C)(-5+N)²
(-5)² +2.(-5).(N) +(N)²
25 - 10N +N²

ou

(-5 + N) . (-5 +N)
+25 -5N -5N +N²
+25 -10N +N²