The figure shows a circle in the coordinate plane. The center of the circle is the point Aſh, k). The point B(x, y) is a point on the circle. Triangle ABC is a right triangle, with point the vertex of the right angle. The variable r represents the radius of the circle.

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step-by-step explanation:

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?