Answer:
7x^2+2x-4
Step-by-step explanation:
a standard form is ax+by=c
5x^2 add 2x^2=7x^2 then -2x but when you have a -10 +6 you get -4 giving you the answer of 7x^2 +2x -4
You will have to divide 140 by 8 and it will give u P you already know R equals 8
Answer:
The area of a rectangle is length*width
Step-by-step explanation:
The answer is A
This is simple