How to multiply a number with a decimal and one without?

Write a polynomial that fits the description: a third-degree polynomial with leading coefficient -4

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

5x−4≥12 or 12x+5≤−4 can you with this problem