Answer:
+ 24x + 16
Step-by-step explanation:
If it is a square, all sides are equal. An area of a square would be side x side. You would multiply 3x + 4 and 3x + 4 together. I used the foil method (multiply first, then outside, inside, last) or (3x * 3x, 3x * 4, 4 * 3x, 4 * 4).
subtract
a) 13/20
b) 1/2
c) 5/24
d) 7/18
e) 7/20
f) 3/40
Add or subtract
a) 4/9
c) 11/20
d) 1/4
e) 19/12 <u>or </u>1
f) 4/21
an=7n-19
(the last one)