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Distribute and expandTechnique

Technique

Distribute and expand

Multiply every term by every term, signs included

3 min 3 steps

Squaring a binomial always leaves a middle term behind. Leaving evidence behind is a habit I've since broken.

Meet it
Run it
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The first step is free. A free account opens the rest.

Calls on

Perfect squares, difference of squaresFactExpand squares in full and factor differences fast

Used by

Solve linear equations for a targetTacticRead the target first, then stop when it stands alone
Zero, one, or infinitely many solutionsTacticCompare slopes and intercepts instead of solving
Rearrange a literal equationTacticSolve for one letter as if the rest were numbers
Rewrite into an equivalent formTacticAim for the choices' form, then check with a number
Find constants from an identityTacticMatch every power of x and the constants fall out