Tx plus 2t plus hx plus 2h?

Answer 1

What does the question ask? Does it ask you to simplify the above, or is it part of a larger question where values for t, x and h are given? Is it definitely Tx rather than tx?

If asked to simplify it, there are numerous ways to do so (but none really make it 'simpler' as such, so it is a bit of a strange one).

For example, by factorising:

tx + 2t + hx + 2h

= t(x + 2) + h(x+2)

or we could write (again by factorising)

tx + 2t + hx + 2h

= x(t + h) + 2(t + h)

Which is useful depends on what the question asks, really.