`[[a,b,c,d|,e],[d,e,f,g|,f],[d,e,f,g|,f],[a,b,c,d|,e]], ubrace(1+2+3+4)_("4 terms"), lim_(N->oo) sum_(i=0)^N, int_0^1 f(x)dx, root(3)(x^2 + 2*x -7)`