What is the length of the side of a square whose area is
(4x2 + 20x + 25) cm?
A. (2x - 5) cm
B. (2x + 25) cm
C. (2x + 5) cm
D. (2x – 25) cm
(4x2 + 20x + 25) cm?
A. (2x - 5) cm
B. (2x + 25) cm
C. (2x + 5) cm
D. (2x – 25) cm
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Answer:
C
Step-by-step explanation:
Get the square root of the first term
✓4x^2 = 2x
Get the square root of the third term
✓25= 5
Multiply the first term and the third term and multiply again by 2 to check if the second term is correct
(2x)(5)(2)= 20x
Therefore, (2x+5)cm is the answer.