What is the answer to this math problem

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.