Question

Medal for Best Answer

Answer 1

Which method is the most efficient method to use to solve \[x^2 - 7 = 0?\]


A. Factoring


B. Isolating the x^2 term and finding the square root of both sides


C. Using the quadratic formula


D. All three methods would be efficient

Answer 2

Let's solve your equation step-by-step.
x2−7=0
Step 1: Add 7 to both sides.
x2−7+7=0+7
x2=7
Step 2: Take square root.
x=±√7
x=√7 or x=−√7
Answer:
x=√7 or x=−√7
Learn how to solve simple quadratics
https://www.youtube.com/watch?v=RweAgQwLdMs

Answer 3

so i guess c

Answer 4

No, It might be B. Read it again.

Answer 5

oops i didnt see what b said yea its b