l45 := (x + 7)(x - 1) = (1 + x)^2;
"(->)"
Error, (in solve) cannot solve for an unknown function with other operations in its arguments
l45 := (x + 7)(x - 1) = (1 + x)^2;
"(->)"
Error, (in solve) cannot solve for an unknown function with other operations in its arguments