Answer:
The second one, third and fourth one
Explanation:
To find area you multiply the length and the width together and when you have something with multiplied exponents you add the exponents so if you had x∧3 ·x∧4 the answer would be x∧7 The first statement is not true because the length and width are in terms of a and the area is in terms of x.
I hope this helps and please don't hesitate to ask if there is anything still unclear!