First divide by 4 to get x^2=9. Then take the square root of both sides. x=3 and x = -3.
Answer:
Nolan correctly identified the square numbers before and after 18.
The square roots of them are 4 and 5.
Clearly, square root of 18 should lie between 4 and 5 only.
He, then carefully squared 4.1, 4.2, 4.3 etc. and identified that 4.3 squared is nearer to 18.
Since, Nolan is finding estimated square root, his steps are cool and he didn't make any error.
Answer:
1st option 9/4
Step-by-step explanation: Searched up the problem on brainly and this was the answer. Hope that helps
