\(3x^2-2y^3\)
\(=3\left(x^2-\frac{2}{3}y^3\right)\)
Z thôi T nha @@@@
\(3x^2-2y^3\)
\(=3\left(x^2-\frac{2}{3}y^3\right)\)
Z thôi T nha @@@@
Thực hiện phép trừ:
a) 3/x-2-2/x+2
b) 5/2x-3 + 2/2x+3 -2x+5/9-4x^2
c) 2y - 6xy+2y/3x+2y + 2y-9x^2/3x+2y
BT9: Thực hiện phép tính
a, 1/2x^2+1/3x^3-5/2x^2-7/3x
b, 3/4xyz^2+2/4xyz^2+1/4xyz
c, 5/8x^2y^3+1/2y^3x^2-3x^2y
BT9: Thực hiện phép tính
a, 1/2x^2+1/3x^3-5/2x^2-7/3x
b, 3/4xyz^2+2/4xyz^2+1/4xyz
c, 5/8x^2y^3+1/2y^3x^2-3x^2y
BT11: Tìm hiệu A-B biết
\(a,-x^2y+A+2xy^2-B=3x^2y-4xy^2\)
\(b,5xy^2-A-6yx^2+B=-7xy^2+8x^2y\)
\(c,3x^2y^3-A-5x^3y^2+B=8x^2y^3-4x^3y\)
\(d,-6x^2y^3+A-3x^3y^2-B=2x^2y^3-7x^3y\)
\(e,A-\dfrac{3}{8}xy^2-B+\dfrac{5}{6}x^2y=\dfrac{3}{4}x^2y-\dfrac{5}{8}xy^2\)
\(f,5xy^3-A-\dfrac{5}{8}yx^3+B=\dfrac{21}{4}xy^3-\dfrac{7}{6}x^3y\)
1)3x^2-9 2)1/2x^2-2y^2 3)3x^2-12y^2 4)1/3x^2y^2-3x^2
(3x+2y)^3 : (3x+2y)^2
a) (2y-1)^3=
b) (3x^2+2y)^3
c) (1/3x-2)^3
Thực hiện phép tính (9x^2y^3-15x^4y^4):3x^2y-(2-3x^2y)y^2
a,(3+1)(x-1)
b,5x(3x-2)
c,3x^2y+6xy^2-9xy):3xy
d,(3x^4-6x^3+4x^2):2x^y
e,(8x^4y^3-4x^3y^2+x^2y^2):2x^2y^2
a)9x^3y^2+3x^2y^2 b)x^3+2x^2+3x c)6x^2y+4xy^2+2xy d)5x^2 (x-2y)-15x (x-2y) Help me zứi