Are these correct now Mr reiny?

What is the solution of x² + 64 = 0?
A. –5
B. 8***
C. ±8
D. no solution

What is the value of b in the triangle shown below?

A right triangle is shown. The height equals 3 b. The base equal b. The area of the triangle equals 24 square inches squared.
A. –4 in
B. 4 in
C. ±4 in***
D. no solution

8 answers

#1 is incorrect.
Either you factor to solve it...
Or take the 64 to the other side, then take the square root...
So B is NOT correct...
1: ±8

2: 4
are those correct now?
Can you take the square root of a negative number?
You have x^2 = -64
so you try to take the square root of both sides...
#2 is correct : )
no i cant take the square root of a negative number so its no solution!
did i get it right Ms pi?
Yes : )