[tex]\huge\bold\color{black}{⟨Answer⟩}[/tex]
1. Not quadratic
2. Quadratic
3. Not quadratic
4. Quadratic
Explanation;
Definition of quadratic equation
An equation where the highest exponent of the variable (usually "x") is a square (²). x² is quadratic but, x³, x⁴, x⁵, ... are not.
Numbers 1, 3, 8, and 10 are not quadratic because there is no (²) present.
A Quadratic Equation is usually written ax² + bx + c = 0
Example: x² + 2x − 5 = 0
Other definition:
Quadratic derives from the word "quad," which means "square," because the variable is squared. It's also known as a Degree 2 Equation (because of the "2" on the x)
How to solve the quadratic formula?
The solutions to the Quadratic Equation are the points where the equation equals zero. They are sometimes known as roots or zeroes. Usually, there are two solutions.
There are a few alternative approaches to solving the problem:
1. Factoring
2. Completing the square
3. Quadratic Formula
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