Tính Tính
a. ( x – 1 )^3 a. ( 2 x – 3 y^2 )^2
b. ( x – 2 )^3 b. ( 2 x^3 – y^2)^3
c. ( x – 3 )^3 c. ( x^2 – 1/2 y^2)^3
d. ( x – 4 )^3
e. ( x – 5 )^3
f. ( x – 6)^3
g. ( x – 7)^3
Tính Tính a. ( x – 1 )^3 a. ( 2 x – 3 y^2 )^2 b. ( x – 2 )^3
By Iris
Bạn tham khảo :
a ,
$(x-1)^3 = x^3 – 3$
b ,
$(x-2)^3 = x^3 – 8$
Tương tự làm các câu tiếp theo nha
$a.(x-1)^3=x^3-3x^2+3x-1 \\b.(x-2)^3=x^3-6x^2+12x-8 \\c.(x-3)^3=x^3-9x^2+27x-27 \\d.(x-4)^3=x^3-12x^2+48x-64 \\e.(x-5)^3=x^3-15x^2+75x-125 \\f.(x-6)^3=x^3-18x^2+108x-216 \\g.(x-7)^3=x^3-21x^2+147x-343 \\a.(2x-3y^2)^2=4x^2-12xy^2+9y^4 \\b.(2x^3-y^2)^3=8x^9-12x^6y^2+6x^3y^4-y^6 \\c.(x^2-\dfrac{1}{2}y^2)^3=x^6-\dfrac{3x^4y^2}{2}+\dfrac{3x^2y^4}{4}-\dfrac{y^6}{8}$