Simplifying and Verifying the Expression: A Comprehensive Guide to –6t²(2t – t⁴) = –12t³ + 6t⁶

When reducing algebraic expressions or verifying equation equivalences, clear step-by-step manipulation is key. One such expression—–6t²(2t – t⁴)—often appears in algebra students’ practice, and understanding its expansion and simplification is essential for mastering polynomial manipulation. This article breaks down the equation –6t²(2t – t⁴) = –12t³ + 6t⁶ thoroughly, showing how to simplify the left-hand side and verify its equivalence with the right-hand side.


Understanding the Context

What Is the Equation?

We aim to confirm whether:
–6t²(2t – t⁴) = –12t³ + 6t⁶

This involves multiplying the binomial inside the parentheses by the polynomial outside and collecting like terms, then comparing with the given right-hand side.


Key Insights

Step 1: Distribute the Polynomial

Start by distributing –6t² across each term inside the parentheses:
–6t²(2t – t⁴) = (–6t²)(2t) + (–6t²)(–t⁴)

Now calculate each product:

  • (–6t²)(2t) = –12t³
  • (–6t²)(–t⁴) = +6t⁶ (because a negative times a negative is positive)

Final Thoughts

Step 2: Combine Like Terms

Adding the two results:
–12t³ + 6t⁶

So, the left-hand side simplifies to:
–6t²(2t – t⁴) = –12t³ + 6t⁶


Step 3: Verify Equivalence

Now observe that:

Left-hand side (LHS): –6t²(2t – t⁴) → after expansion: –12t³ + 6t⁶
Right-hand side (RHS): –12t³ + 6t⁶

Both sides are identical. Therefore, the original equation holds true.


Why This Matters: The Importance of Polynomial Expansion