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Multiplying and Dividing Rationals  Problem 8
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
When the +,  signs of factors are extremely close and you think something should cross out, you could be looking at opposite sign binomials. They are the same binomial except for one has been multiplied by 1. If you factor out the negative 1 and possibly rearrange the terms to make the factors more clearly the same, they can be canceled from top and bottom of a fraction. Be extremely precise with the +,  signs, though it is very easy to make a mistake on these!
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
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Sample Problems (10)
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Multiplying and Dividing Rationals
Problem 1 6,018 viewsMultiply and simplify your answer.
3xy² ⋅ 4x³z 10y³ x³z³ 
Multiplying and Dividing Rationals
Problem 2 4,601 viewsMultiply and simplify your answer.
x + 3 (5x² + 10x) 5x² 
Multiplying and Dividing Rationals
Problem 3 4,382 viewsMultiply and simplify your answer.
m² + 5m + 6 ⋅ m² − 2m − 3 m − 3 m² + 3m + 2 
Multiplying and Dividing Rationals
Problem 4 4,026 viewsDivide and simplify your answer.
5t² + 10t − 15 ÷ 2t² + 7t + 3 5 − 6t + t² 4t² − 8t − 5 
Multiplying and Dividing Rationals
Problem 5 591 views 
Multiplying and Dividing Rationals
Problem 7 666 views 
Multiplying and Dividing Rationals
Problem 8 579 views 
Multiplying and Dividing Rationals
Problem 9 567 views 
Multiplying and Dividing Rationals
Problem 10 594 views 
Multiplying and Dividing Rationals
Problem 11 538 views
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