Answer:
-2
Step-by-step explanation:
When You subtract a negative from a negative you get a negative
Answer:

Step-by-step explanation:
Area of parallelogram =base x height
Area=20 x 8=160
Units=

49 is a square given by 7x7 as is clear in your equation, 4 is a square given by 4x4 the operator given is - ( minus) you have two squares, and a difference sign a^2 - b^2 = (a-b)(a+b) 7^2 -2^2 = (7-2)(7+2) = (5)(9) = 45 it is the diffeernce of two squares
I think the answer is x=30