Meg described four triangles as shown below:

triangle p: all sides have length 7 cm.
triangle q: two angles measure 55°.
triangle r: two sides have length 8 cm, and the included angle measures 60°.
triangle s: base has length 8 cm, and base angles measure 55°.

which triangle is not a unique triangle?

The triangle which is not a unique triangle is:

                   Triangle Q.

                  Hence, Triangle P will be unique.

     Hence, Triangle Q is not unique.

( Since we are given two angles and the measure of the third angle could be known with the help of property that:

Sum of all the angles of a triangle is 180° )

( Since, we make a line segment of given length and then keep the compass at one of end point and make a 60 degree angle and cut that side into length 8 cm and finally join the other end point and the constructed line to get a triangle)

Hence, Triangle R is also unique.

( First draw a line segment of length 8 cm and at both the ends of the line make a 50 degree angle and extend the line over the arc of the angle and see where two lines intersects.

By such a way we obtain a unique triangle)

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!