1.\:\:expand\:(x^{2}+5)(x^{2}-2x+1)
2.\:\:expand\:(4-2x^{2})(x^{2}+4x-1)
3.\:\:expand\:(2x^{2}-2)(3x^{2}-6x-2)
4.\:\:expand\:(x^{2}+3)(x^{2}-2x+3)
5.\:\:expand\:(7-3x^{2})(x^{2}+3x-5)
6.\:\:expand\:(6-9x^{2})(x^{2}+8x-2)
7.\:\:expand\:(5x^{2}-3)(6x^{2}-5x-5)
8.\:\:expand\:(x^{2}+4)(x^{2}-5x+10)
9.\:\:expand\:(x^{2}+9)(x^{2}-7x+1)
10.\:\:expand\:(6-4x^{2})(x^{2}+5x-2)
