28.5k views
5 votes
Solve the following equation for x. x^2 - 36 = 0

A. x=1 x=-36
B. x=-1 x=36
C. x=-6 x=6
D. x=-18 x=18

User Gromgull
by
8.1k points

1 Answer

5 votes

Answer:

The answer is C.x=6,x=-6

Explanation:

Greetings!

  • x²-36=0
  • x²-36+36=0+36.. add 36 both sides
  • x²=36... simplify

An assumption

"In general, all equations of the form x² = a, where a is a positive number, will always give two solutions, namely x = - √a or x = √a."

Thus,

  • x=36, x= -36
  • x=6, x=-6

User Marol
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories