A number k such that f(k) = 0 for the polynomial equation f(x).

The value k such that f(k) = 0 for the polynomial function f.

A point where a graph intersects the x-axis.

Any replacement for the variable that makes the equation true.

A general formula used to solve any quadratic equation. x=(-b±√(b^2-4ac))/2a for polynomials in the form ax2 + bx + c = 0.

If x^2 = k, then x = √k or x = -√k.

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FOCA_3.2

Vocabulary for FOCA_3.2

Term	Definition
root	A number k such that f(k) = 0 for the polynomial equation f(x).
zero	The value k such that f(k) = 0 for the polynomial function f.
x-intercept	A point where a graph intersects the x-axis.
solution	Any replacement for the variable that makes the equation true.
quadratic formula	A general formula used to solve any quadratic equation. x=(-b±√(b^2-4ac))/2a for polynomials in the form ax2 + bx + c = 0.
square root property	If x^2 = k, then x = √k or x = -√k.