(1 point) The expression (x−1y4z3(xy)1z−6)−4 equals xryszt
where r, the exponent of x, is:
and s, the exponent of y, is:
and finally t, the exponent of z, is:
[NOTE: Your answers cannot be algebraic expressions.]

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.