Can someone explain if I am wrong? My answers for this so far are:
A. (b-10)(b+10)=180 and b is 2√70
B. (2√70-10)=c, so C is 6.733201
C. (2√70+10)=d, so D is 26.733201

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?