Write an expression consisting of up to three terms:
The first of these MUST be present. The three terms must be added or subtracted.
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A quadratic expression is an expression which is written in the form ax2+bx+c, where a, b, and c represent constants, x represents a variable, and a is not equal to 0.
x2 + 3x + 4 This is quadratic because the highest exponent of x is 2, and it is an expression because there is no equals sign.
You will apply them when solving quadratic equations in which the quadratic expression cannot be factorised.
Re-write it with a root. If the power of the expression is less than 1, for example x1/3, the expression could be rewritten as cube root of x.
The one that forms a parabola (a hump, sort of) is called the quadratic expression or quadratic formula.