contestada

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

Respuesta :

cygnusabc00

Answer:

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

Step-by-step 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

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