# Lesson goal: Factor a polynomial

Previous: Simplify an algebraic expression | Home | Next: Solve equations

We've developed a function called factor that knows how to factor most polynomial-type expressions. This means figuring out, for example, that $4x^2-4x-3$ is equal to $(2x+1)(2x-3)$.

The factor function here is use a lot like the algebra function from this past lesson.

# Now you try. Try factoring just about any expression you can find in your algebra book, and see what you get.

This example will factor $4x^2-4x-3$. You might also try factoring:
• $9x^2+21$
• $t^3-3t^2+t-3$
• $u^2+u-56$
• $12x^2-5x-2$
• $10b^2-38b+24$
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