Question

Can somebody help solve it?

Answer 1

Explanation:

It's an isosceles triangle so it means two sides are equal or better term congruent .

So PR is equal to PQ

You can write

X+1=2x+1

Solve the equation

2x+1-x-1=0

X=0

In order to find PQ plug X in place of 2x+1

To find

QR do the same for its expression .