book Maths Puzzle Numerical Ability

Can you help me to factorise this equation please. I would really appreciate it.

25x(square) 40x +16

Read Solution (Total 0)

book Other Question

I'm not sure how to get 6- the square root of 5 over 4+ the square root of 5
Could you help me? thanks!
Factorise completely: (^= squared)

1. 6+2x
2. xy-x
3. b(2x-y)-c(2x-y)
4. 15x-3x^
5. 2p(3-q)+3(q-3)
6. x^+xy+y^+yx
7. a^-16
8. 4y^-81
9. x^-9x+18
10. x^n-5xn=