Post a New Question

algebra

posted by on .

how do i solve this find the root

3x^2 +21x=0

is the root 7

  • algebra - ,

    factor it

    3x(x+7) = 0
    so
    3x=0 or x+7=0
    x = 0 or x = -7

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question