Answer:
tens=5
Step-by-step explanation:
Answer:

Step-by-step explanation:
5x4+20x3-105x2
5x2( x^2 +4x -21)

Answer:
343x^6y^3z^3
Step-by-step explanation:
One of the rules of exponents demands:

where a, b, c and m are coefficients.
Furthermore, you use the following rule for exponents of variables that already have an exponent:

Thus, you can apply this rules in the following way:

hence, the answer is 343x^6y^3z^3
Answer:
,-3
Step-by-step explanation: