exam Maths Puzzle Numerical Ability

Can someone please, please help me with this one?

16x^4 - 40x^2 + 9

Read Solution (Total 0)

exam Other Question

I'm not sure what symbol to use for pi so I'm just spelling it. I'm using * for multiplication.
An ice cream cone volume is 8*pi cu.in. the height is 4 in more than the radius of 16. 2log3(a) - log3(a+4)= 2

17. logz(x)= 3logz(p)+ 1/2logz(r)-logz(q)
express in p,q, and r

thank you please show work.