ICSE Class 9 Answered
Factorise:1. x^4 +9
2.4x^2-y^2-3xy+2x-2y
3.x^4-y^4+2y^2-1
Asked by hemanginivyas92.9spicertl | 26 Aug, 2020, 22:43: PM
TO factorise: x4+9
x4+9 = (x2 + 3)2 - 6x2
![straight x to the power of 4 plus 9 equals open parentheses straight x squared plus 3 close parentheses squared minus open parentheses square root of 6 straight x close parentheses squared equals open square brackets straight x squared plus 3 minus square root of 6 straight x close square brackets open square brackets straight x squared plus 3 plus square root of 6 straight x close square brackets](https://images.topperlearning.com/topper/tinymce/cache/9d4858ebf093f1af93690fc55fafbc29.png)
To factorise: 4x2 - y2 - 3xy + 2x - 2y
![4 straight x squared minus straight y squared minus 3 xy plus 2 straight x minus 2 straight y
equals left parenthesis 4 straight x plus straight y right parenthesis left parenthesis straight x minus straight y right parenthesis plus 2 left parenthesis straight x minus straight y right parenthesis
equals left parenthesis straight x minus straight y right parenthesis left parenthesis 4 straight x plus straight y plus 2 right parenthesis](https://images.topperlearning.com/topper/tinymce/cache/88f39eef5676bb40d0252e7b0f41864f.png)
Answered by Renu Varma | 27 Aug, 2020, 11:16: AM
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