\(y^2-12y+36-144x^2=\left(y-6\right)^2-\left(12x\right)^2=\left(y-12x-6\right)\left(y+12x-6\right)\)

\(=\left(y^2-12y+36\right)-144x^2=\left(y-6\right)^2-144x^2=\left(y-12x-6\right)\left(y+12x-6\right)\)

\(( y − 12 x − 6 ) ( y + 12 x − 6 )\)

A= (3x+4)^3

thay vào ta được : (3*32+4)^3=1000000

- Kết quả là 1000000

- Đúng thì k hộ mình nhé :))

\(x^4-2x^2-144x-1295=\left(x+5\right)\left(x-7\right)\left(x^2+2x+37\right)\)

1295^2 - 144 = 1677025 - 144 = 1676881 

(x+y) ^ 4 = (x+y) x (x+y) x (x+y) x (x+y) = 4(x+y) + x^4 + y^4 = 4 + 4 + 4 = 4 x 3 = 12 

144x²y²-(4x²+9y²)²

= (12xy)²-(4x²+9y²)²

= [12xy-(4x²+9y²).(12xy+4x²+9y²)

= (12xy-4x²-9y²).(12xy+4x²+9y²)

\(27x^3-\dfrac{1}{64}\)

\(=\left(3x\right)^3-\left(\dfrac{1}{4}\right)^3\)

\(=\left(3x-\dfrac{1}{4}\right)\left(9x^2+\dfrac{3x}{4}+\dfrac{1}{16}\right)\)

b, x^3 + 12x^2 + 48x + 64
= x^3 + 3.x.4.(x + 4) + 4^3
= (x + 4)^3

nha bạn 

chúc bạn học tốt ạ 

x³ - 12x² + 48x - 64 

= x³ - 3.x².4 + 3.x.4² +4³ 

= ( x - 4 )³ 

Hok tốt!!!!!!!!!