Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: Thực hiện các phép tính sau: a, – 2x^3 y(2x^2 -3y + 5yz) b, (- 2x^3)(x^2 + 5x – 1/2)

Toán Lớp 8: Thực hiện các phép tính sau:
a, – 2x^3 y(2x^2 -3y + 5yz)
b, (- 2x^3)(x^2 + 5x – 1/2)

Comments ( 2 )

  1. a) -2x³y (2x²-3y+5yz)= -4x^5y + 6x³y² – 10x³y²z
    b) (- 2x³)(x² + 5x – 1/2) = -2x^5 – 10x^4 +x³
     

  2. ~ Bạn tham khảo ~
    a, -2x^3y(2x^2-3y+5yz)
    = -4x^5y+6x^3y^2-10x^3y^2z
    b, -2x^3(x^2+5x-1/2)
    = -2x^5-10x^4+x^3

Leave a reply

222-9+11+12:2*14+14 = ? ( )

About Bảo Anh