2. Solving Equations

2.01 Linear and absolute value equations and inequalities

2.02 Quadratic equations

2.03 Operations with complex numbers

2.04 Quadratic equations with complex solutions

United States of America

Grades 9-12

2.02 Quadratic equations

Adaptive

Worksheet

Interactive practice questions

Solve the following equation for $x$x by factoring or otherwise:
$x^2+4x-21=0$x2+4x−21=0

Write all your solutions on the same line, separated by a comma.

Medium

1min

Solve the following equation for $x$x:

$x^2+10x+16=0$x2+10x+16=0

Medium

1min

Solve the following equation for $x$x:
$x^2+7x-18=0$x2+7x−18=0

Medium

1min

Solve the following equation for $x$x:

$x^2-20x+99=0$x2−20x+99=0

Medium

1min

Outcomes

A.SSE.A.2

Use the structure of an expression to identify ways to rewrite it.

A.CED.A.4

Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations.

A.REI.B.4.B

Solve quadratic equations by inspection (e.g. For x^2 = 49), taking square roots, completing the square, the quadratic formula and factoring, as appropriate to the initial form of the equation. Recognize when the quadratic formula gives complex solutions and write them as a ± bi for real numbers a and b.

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