(2y+8)(2y-8)=

(a)  

(7x³+1)(7x³-1)=

(a)  

(4z+1)(4z-1)=

(a)  

(x+z)(x-z)=

(a)  

(4y²+9)(4y²-9)=

(a)  

(8y-4)(8y+4)=

(a)  

(6x⁴-3)(6x⁴+3)=

(a)  

(3z+2)(3z-2)=

(a)  

(8z+9)(8z-9)=

(a)  

(11a-2b)(11a+2b)=

(a)  

(10+7m)(10-7m)=

(a)  

(3ab-5a)(3ab+5a)=

(a)  

(12+4m)(12-4m)=

(a)  

(6x²y-8)(6x²y+8)=

(a)