What is the answer for x 2 9?

What is the answer for x 2 9?

One way to solve the quadratic equation x2 = 9 is to subtract 9 from both sides to get one side equal to 0: x2 – 9 = 0. The expression on the left can be factored: (x + 3)(x – 3) = 0. Using the zero factor property, you know this means x + 3 = 0 or x – 3 = 0, so x = −3 or 3.

Can x 2 9 be simplified?

3 Answers By Expert Tutors You cannot simplify x^2 + 9 with real numbers but you can use the imaginary number system.

How many solutions does x 2 =- 9 have?

It has 2 imaginary, or complex solutions.

What is the factor of x² 9?

Rewrite 9 as 32 . Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) a 2 – b 2 = ( a + b ) ( a – b ) where a=x and b=3 .

What is the factor of x 2 9?

What are the factors of x square 9?

Algebra Examples Rewrite 9 as 32 . Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) a 2 – b 2 = ( a + b ) ( a – b ) where a=x and b=3 .

Is X squared plus 9 prime?

x2 + 9 = 22 + 9 = 13, which is prime.

How do you get x alone?

Generally, think of what is being done to x and then “undo” it by doing the opposite, and do that on both sides of the equal sign. Take care of all adding and subtracting first, and then do the multiplication and division.

What is 9 square rooted?

3
The square root of 9 is 3. It is the positive solution of the equation x2 = 9. The number 9 is a perfect square….Square Root of 9 in radical form: √9.

1. What Is the Square Root of 9?
4. FAQs on Square Root of 9

How do you factor X ^ 2-9 Socratically?

Explanation: x2 −9 is a difference of squares. and in general factorises as. ∙ xa2 −b2 = (a −b)(a +b) here a = x and b = 3. ⇒ x2 −9 = (x − 3)(x +3) Answer link. smendyka.

What is the difference of squares in x2 −9?

x2 −9 is a difference of squares and in general factorises as ∙ xa2 −b2 = (a −b)(a +b) here a = x and b = 3

Is the equation 6 / 2 ( 1 + 2 ) = x 1 or 1?

I don’t usually get all worked up in these Facebook questions but, this one just nerves me. The question is whether the answer to the equation 6/2 (1+2)=x is 9 or 1. Now I’m in college and I can tell you it is definitely not 1.