Simplify the polynomial by combining like terms. xz+3x^3*z+x^2*yz−2x^3*z−7xz

it should be x^2yz+x^3z-6xz

Step-by-step explanation:

answer4 to the second power is 16

and 4 to the third power is 64,

answer: what is the conflict?

step-by-step explanation:

*what has happened to new york city?

*what is in the time capsule?

* what did the kidz see that gave them hope?

*what will they do with what they find?

* how will they save the city?

* what challenges will they face along the way?

*what big choice will they make at the climax of the story?

* what lesson do they learn at the end of the story?