Text Expand and simplify: (a) (x+5)(x−2)(x+5)(x-2)(x+5)(x−2) (b) (x−4)2(x-4)^{2}(x−4)2 (c) (3x+1)(x−2)(3x+1)(x-2)(3x+1)(x−2) Solution (a) x2−2x+5x−10=x2+3x−10x^{2}-2x+5x-10=x^{2}+3x-10x2−2x+5x−10=x2+3x−10. (b) (x−4)2=x2−8x+16(x-4)^{2}=x^{2}-8x+16(x−4)2=x2−8x+16. (c) 3x2−6x+x−2=3x2−5x−23x^{2}-6x+x-2=3x^{2}-5x-23x2−6x+x−2=3x2−5x−2. (a) x2+3x−10(b) x2−8x+16(c) 3x2−5x−2 \boxed{\;(a)\;x^{2}+3x-10\qquad (b)\;x^{2}-8x+16\qquad (c)\;3x^{2}-5x-2\;}(a)x2+3x−10(b)x2−8x+16(c)3x2−5x−2