(9 x + 5) - (4 x + 3)

Write the converse of the following statement: if the trees have no leaves, then it is fall. if the trees have no leaves, then it is fall. the trees have no leaves, therefore it is fall. it is fall since the trees have no leaves. if it is fall, then the trees have no leaves.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

If rt is greater than ba, which statement must be true ?