# quadratic

- a quadratic polynomial or equation.

## Origin of quadratic

## Related Words for quadratic

rectangular, quadrate, quadratic, equilateral, foursquare, boxlike, boxy, orthogonal, rectilinear, squarish## Examples from the Web for quadratic

### Contemporary Examples of quadratic

“When I was in third grade, I was in quadratic equations when my class was, like, reading clocks,” Andraka says.

Sundance Offers Brief Documentary Films as Part of Focus Forward ProjectKevin Fallon

January 24, 2013

As a teen, Randy had painted a submarine, an elevator door and the quadratic equation on the walls of his childhood bedroom.

### Historical Examples of quadratic

It is right, but too lengthy to be worth as much as a Quadratic.

A Tangled TaleLewis Carroll

It had never been determined if that order was quadratic, cubic or higher.

Cube Root of ConquestRoger Phillips Graham

What does matter is thisI must ask you to tell me exactly why you wished me to work out that quadratic problem for you.

Marjorie Dean, High School JuniorPauline Lester

She now began to read Euclids Elements, and proceeded in algebra as far as quadratic equations.

The Book of CuriositiesI. Platts

Since the fraction is infinite it cannot be commensurable and therefore its value is a quadratic surd number.

## quadratic

- Also called: quadratic equation an equation containing one or more terms in which the variable is raised to the power of two, but no terms in which it is raised to a higher power

- of or relating to the second power

## Word Origin and History for quadratic

1650s, "square," with -ic + obsolete quadrate "a square; a group of four things" (late 14c.), from Latin quadratum, noun use of neuter adjective quadratus "square, squared," past participle of quadrare "to square, set in order, complete" (see quadrant). Quadratic equations (1660s) so called because they involve the square of x.

## quadratic

- Relating to a mathematical expression containing a term of the second degree, such as x2 + 2.♦ A quadratic equation is an equation having the general form ax2 + bx + c = 0, where a, b, and c are constants.♦ The quadratic formula is x = -b ± √(b2 - 4ac)/2a. It is used in algebra to calculate the roots of quadratic equations.