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Common Core Standard HSN-CN.C.7 Questions

Solve quadratic equations with real coefficients that have complex solutions.

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Grade 11 Complex Numbers CCSS: HSN-CN.C.7
Use the FOIL method to solve this problem: [math](10-15i)(10+15i)=[/math]. What is the last (L) term?
  1. [math]-225i[/math]
  2. [math]-225i^2[/math]
  3. [math]225i^2[/math]
  4. [math]225i[/math]
Grade 11 Complex Numbers CCSS: HSN-CN.C.7
Use the FOIL method to solve this problem[math](10-15i)(10+15i) =[/math]. What is the outer (O) term?
  1. [math]150i[/math]
  2. [math]-150i[/math]
  3. [math]100[/math]
  4. [math]225[/math]
Grade 11 Complex Numbers CCSS: HSN-CN.C.7
Use the FOIL Method to solve this problem [math](10-15i)(10+15i)=[/math]. What is the first(F) term.
  1. [math]150i[/math]
  2. [math]-150i[/math]
  3. [math]100[/math]
  4. [math]-100[/math]
Grade 11 Complex Numbers CCSS: HSN-CN.C.7
After using FOIL method for [math](10-15i)(10+15i)=[/math], the middle term result will be what?
  1. [math]150i[/math]
  2. [math]300i[/math]
  3. [math]-300i[/math]
  4. [math]0[/math]
Grade 11 Complex Numbers CCSS: HSN-CN.C.7

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