What is the roots of the quadratic equation x2 9?

Answer: x = −3 or 3.

What are the root of the quadratic equation x2?

1.618 & -0.618 are the roots of quadratic equation x2 – x – 1 = 0.

What is the answer of x2 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.

What is the solution set of X² 9 0?

The equation has no real solutions. It has 2 imaginary, or complex solutions.

What are roots of quadratic equation?

The roots of quadratic equation are the values of the variable that satisfy the equation. They are also known as the “solutions” or “zeros” of the quadratic equation. For example, the roots of the quadratic equation x2 – 7x + 10 = 0 are x = 2 and x = 5 because they satisfy the equation.

What are the factors 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 .

How many roots does a quadratic equation have?

A quadratic equation with real or complex coefficients has two solutions, called roots.

What are the roots of the quadratic equation x2 5x =- 6?

Answer: Using the quadratic formula, the roots of the equation x2 – 5x + 6 are 2 and 3.

How many roots does x2 2x 1 0 have?

Alternatively, you could say that x2−2x+1=0 has exactly two roots, counting multiplicity.

How did you find the root of each equation?

The roots of any quadratic equation is given by: x = [-b +/- sqrt(-b^2 – 4ac)]/2a. Write down the quadratic in the form of ax^2 + bx + c = 0. If the equation is in the form y = ax^2 + bx +c, simply replace the y with 0. This is done because the roots of the equation are the values where the y axis is equal to 0.

How do you find the square root of 9?

The square root of 9 is 3. Therefore, 9 √9 = 9 × 3 = 27.

Which of the quadratic equation has roots 3 5?

Hence, the correct answer is x2 – 8x + 15 = 0.

What are the roots of a quadratic equation x² 6x 8 0?

The answers are x=−2 and x=−4 .