Practice for lesson 7 of 18, 9 problems
Practice: Adding, subtracting and multiplying polynomials
Practice problems with solutions on adding, subtracting and multiplying polynomials: distributing a monomial, multiplying binomials and trinomials, three factors and an area problem.
Review the lessonWork each problem out on paper before you open the solution. If your answer is off, compare the steps and find where you went wrong. If a problem stops you cold, go back to the lesson: every set links to it.
Warm-up
Level up
Word problems
Quick check
Practice 8Quick check
What is \((x - 4)(x + 6)\)?
Outer plus inner: \(6x - 4x = 2x\).
Practice 9Quick check
What is the degree of \((x^3 + 1)(x^4 - x)\)?
The highest-degree terms multiply: \(x^3 \cdot x^4 = x^7\).
All done?
If you got most of them right, you're ready to move on. If not, reread the lesson and try the ones you missed again in a few days.