Final answer to the problem
Step-by-step Solution
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Combining like terms $-9x^3$ and $-12x^3$
Learn how to solve special products problems step by step online.
$\left(6x^4-21x^3\right)x$
Learn how to solve special products problems step by step online. Expand the expression (6x^4-9x^3-12x^3)x. Combining like terms -9x^3 and -12x^3. Solve the product \left(6x^4-21x^3\right)x. When multiplying exponents with same base you can add the exponents: 6xx^4. When multiplying exponents with same base you can add the exponents: -21xx^3.