Question

responda:
a) (x+2y)²=
b) (y-6)²=
c) (3x³y+3xy³).(3x³y-3xy³)=
d) (a+9)²=
e) (x+9)²=
f) (12+x)²=
g) (x+m)²=
h) (3x+10)²=
i) (5x+8y)²=
j) (3x²+2y³)²=
k) ( x+xy)²=
l) (2a-3b)²=
m) (1-b)²=
n) ( 8x²-2a)²=
o) (3x²-2a)²=
p) (x+9) .(x-9)=
q) (y+7).(y-7)=
r) (a+5).(a-5)=
s) ( 4+a).(4-a)=

Answer 1

Responda:
a) (x+2y)²=

(x + 2y)² 
(x + 2y)(x + 2y) =
x² + 2xy + 2xy + 4y²
x² + 4xy + 4y²


b) (y-6)²=

(y - 6)² =
(y - 6)(y - 6) =
y² - 6y -6y + 36
y² - 12y + 36




c) (3x³y+3xy³).(3x³y-3xy³)=   ?????

(3x³y + 3xy³)(3x³y- 3xy³) = 
9x⁶y² - 9x⁴y⁴ + 9x⁴y⁴ - 9x²y⁶
9x⁶y²             0           - 9x²y⁶

9x⁶y²  - 9x²y⁶




d) (a+9)²=
e) (x+9)²=

(x + 9)²
(x + 9)(x + 9) 
x² + 9x + 9x + 81
x² + 18x + 81

f) (12+x)²=

(12 + x)² =
(12 + x)(12 + x) = 
144 + 12x + 12x + x²
144 + 24x + x²






g) (x+m)²=

(x + m)²
(x + m)(x + m) =
x² + xm + xm + m² 
x² + 2xm + m²





h) (3x+10)²=

(3x + 10)² =
(3x + 10)(3x + 10) =
9x² + 30x + 30x + 100
9x² + 60x + 100


i) (5x+8y)²=

(5x + 8y)² =
(5x + 8y)(5x + 8y) =
25x² + 40xy + 40xy + 64y²
25x² + 80xy + 64y²




j) (3x²+2y³)²=

(3x² + 2y³)² =
(3x² + 2y³)(3x² + 2y³) =
9x⁴ + 6x²y³ + 6x²y³ + 4y⁶ 
9x⁴ + 12x²y³ + 4y⁶


k) ( x+xy)²=

(x + xy)²
(x + xy)(x + xy) =
x² + x²y + x²y + x²y²
x² + 2x²y + x²y²



l) (2a-3b)²=

(2a - 3b)² =
(2a - 3b)(2a - 3b) =
4a² - 6ab - 6ab + 9b²
4a² - 12ab + 9b²


m) (1-b)²=

( 1 - b)² =
(1 - b)(1 - b) =
1 - 1b - 1b + b²
1 - 2b + b²



n) ( 8x²-2a)²=


(8x² - 2a)² =
(8x² - 2a)(8x² - 2a) =
64x⁴ - 16ax² - 16ax² + 4a²
64x⁴ - 32ax² + 4a²







o) (3x²-2a)²=

(3x² - 2a)² =
(3x² - 2a)(3x² - 2a) =
9x⁴ - 6ax² - 6ax² + 4a²
9x⁴ - 12ax² + 4a²





p) (x+9) .(x-9)=   

(x + 9)(x - 9)
x² - 9x + 9x - 81
x²        0      - 81
x² - 81

q) (y+7).(y-7)=


( y + 7)( y - 7)=
y² - 7y + 7y - 49
y²        0      - 49
y² - 49

r) (a+5).(a-5)=

(a + 5)(a - 5) =
a² - 5a + 5a - 25
a²         0     - 25
a² - 25
 
s) ( 4+a).(4-a)=

( 4 + a)(4 - a) =16 - 4a + 4a - a²
16       0       - a²
16 - a²