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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math
Get ready for Precalculus
Get ready for polynomials
Factoring using structure
Factoring using the perfect square pattern
Factoring using the perfect square pattern
Sal factors 25x^4-30x^2+9 as (5x^2-3)^2.
License: CC BY-NC-SA by Khan Academy