Rewrite the expression as one summation: E Cnx" + 2x E Cn+1x" + E, Cnx"+1 In=1 The new summation will begin at k = A Before writing the summation term, we write what term? Type each subscript regularly and use ^ for exponents. For example, c>x? would be typed c2x^2. Put spaces before and after any symbols such as - and +. The term inside the new summation will have what coefficient in front of x*? Type each subscript regularly and use ^ for exponents. For example, C>x would be typed c2x^2. Put spaces before and after any symbols such as - and +.