Alejandra was given this problem to solve her math classz x ^ 2 + 9 = 0. She realized that both x ^ 2 and 9 are perfect squares . Therefore Alejandra chose to use difference of squares and completed the problem as such. (x + 3)(x - 3) = 0 x = - 3 and x = 3 Explain why Alejandra was incorrect in choosing to use the difference of squares method. (Explain why she could not use the difference of square method x ^ 2 + 9 = 0)

see below

Step-by-step explanation:

x ^ 2 + 9 = 0

difference of squares method

Difference means subtraction

x^2 - b^2 = (x-b) (x+b)

We do not have the difference of squares

x^2+9=0

x^2 = -9

This means we do not have a real solution

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.

d is correct

step-by-step explanation: