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Mathematics 11 Online
OpenStudy (anonymous):

Determine two functions, , whose product would result in 4x^2-81. Please Explain each step to getting the solution , thank you!

Nnesha (nnesha):

use difference of s squares method

Nnesha (nnesha):

which u can only use when you have negative sign |dw:1420507291511:dw|one bracket should be negative and one should be positive

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