Last problem of the day hopefully I can get all A

Answer:
The answer is 21
Step-by-step explanation:
Simplify 2² to 4
Simplify 5² to 25
25=b²+4
b²=25-4
b²=21
and because you cant square root 21 the answer would be ±[tex]\sqrt{21}[/tex]
Answer:
squarerot of 21
suareroot of 21 5^2=2^2+b^2 25=4+b^2 21=b^2 squareroot of 21
suareroot of 21. 5^2=2^2+b^2, 25=4+b^2, 21=b^2, squareroot of 21
Step-by-step explanation:
i did the quiz