Find the missing angle value A for triangle ABC if B=45 and C=45 degrees.

A would be 90

Step-by-step explanation:

Triangles always calculate to 180 degrees so with the 45+45 being 90 you would subtract that to 180 and it'd give you 90.

64

Step-by-step explanation:

Given

we need to find a number that makes perfect square

We apply completing the square method

In completing the square method, take the coefficient of x  , divide it by 2  and then square it

coefficient of x  is 16

16 divide by 2 is 8

So 64 will be added to the given expression to make perfect square trinomial .