First simplify the equation and next multiply the 20 with the x^2 and find a number that adds together to give you the middle
Answer:

Step-by-step explanation:
From law of indices
Answer:
Answer is 4
Step-by-step explanation:
8+(3x4) = (2x2) + (4x4)
8+12 = 4+16
20=20
15.4m Square because That is what I got when I times those two together