Finding the Roots More Options: Make a Folding Card

Storyboard Description

This storyboard does not have a description.

Storyboard Text

• Sure, you just solve the polynomial equation by finding all roots
• Can you help me solve 2x^3-12x^2-3x+204=0
• Ok, how do we start this?
• 2(x^3-6x^2-17x+102)=0
• First you find the greatest common factor and that is 2.
• 2[(x^3-6x^2)(17x+102)]=0 [x^2(x-6)-17(x-6)]=0
• Is the part where 'Poly' comes to play? Do we make new equations?
• Yes, I guess. You group the fist two then the next. Then you factor out.
• 2(x-6)(x^2-17)=0
• Are we almost doneeeee?
• No..we have to put it together then actually find the zeros/roots.
• Now we set each parenthesis to zero right?
• (x-6)=0 x=6 (x^2-17)=0. x=the square root of 17 x= negative the square root of 17
• Yes...I thought you didn't know how to do this.
• Can you explain why that split in two please?
• Sure, when you are square rooting this, you have to put plus of minus.
• Since you put plus or minus there are now two equations.
More Storyboards By sophiabasing35
Explore Our Articles and Examples

Teacher Resources

Lesson Plans Worksheet TemplatesPoster Templates

Film Resources

Film and Video Resources
Video Marketing