What is the value of 0 raised to the power of any nonnegative nonzero exponent?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)