Question

Please help me I’m sorry it’s not the best pic but if u need help I can gladly tell u what they are

Answer 1

16$x^{2}$-1----------------(4x-1)(4x+1)

16$x^{2}$-4----------------4(2x+1)(2x-1)

4$x^{2}$-1 -----------------(2x+1)(2x-1)

4$x^{2}$-9-------------------(2x+3)(2x-3)



hope this helps
<3