What’s the difference between 1,-9 and -4,3

Aright triangle has an area of 18 square inches. b: if the triangle is not an isosceles triangle, what are all the possible lengths of the legs, if the lengths are whole numbers. answer !

Can someone me immediately, this is due by midnight! if you can't see the question, i'll text it to you. show the steps you took to get your answer.

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.