Answer:
use desmos online graphing calculator
Step-by-step explanation:
it helps alot :)
Answer:
Plug 3 into everywhere there is an 'x', and solve.
Answer: the answer is 4,598.
Answer:
x = 0, -4 and -3.
Step-by-step explanation:
The given expression is "3x to the power of 3 + 21x squared + 36x = 0".
We can write this expression as follows :

Taking 3x common.

x = 3

Hence, the solution of the given quadratic equation are x = 0, -4 and -3.