5. ccss reason inductively the product of two integers is -21. the difference
between the integers is - 10. the sum of the two integers is 4. what are the
two integers?

The triangle on the left is a 45-45-90 triangle so if its hypotenuse is 6√2, the legs are each 6 units long. 

As such the hypotenuse of the right triangle is 6 units. The right triangle is a 30-60-90 triangle. So your x leg is half the hypotenuse. 6 / 2 = 3

x = 3