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ICSE Class 9 Answered

Resolve the factors : 1) x^4 + 4 2) x^4 + x^2 y^2 + y^4 3) x^2 - y^2 - 4xz + z^2
Asked by Karuna | 22 Apr, 2018, 10:05: AM
answered-by-expert Expert Answer
x4 + x2 y2 + y4 = x4 + 2x2 y2 + y4 - x2 y2 
                     = (x2 + y2) - x2 y2 
                     = (x2 + y2 + xy) (x2 + y2 - xy)
Answered by Sneha shidid | 22 Apr, 2018, 07:31: PM

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