Algebra 2 Review

5

$$2\sqrt{6}$$

2i

(x + 12)(x - 3)

f(1) = 3

A polynomial is an expression consisting of variables and coefficients, using only the operations of addition, subtraction, multiplication, and non-negative integer exponents.

The quadratic formula is $$x = \frac{{-b \pm \sqrt{{b^2 - 4ac}}}}{{2a}}$$ for a quadratic equation of the form $$ax^2 + bx + c = 0$$ .

Rational numbers can be expressed as a fraction of two integers, while irrational numbers cannot be expressed as a simple fraction.

The vertex form of a quadratic function is $$f(x) = a(x - h)^2 + k$$ , where (h, k) is the vertex of the parabola.

Two expressions are equivalent if they have the same value for all values of the variable.