Let A =(2-1). Prove that the folowing four formulas are equal to A. 1 (1) (2+1)6 (2) (3-22) 1 (3) (3+22) (4) 99-70/2 Calculate A use these four formula with 2=1.4. Rank them in order based on their accuracy and explain why Find the root interval of e-x-x=0 and solve it with accuracy 10-3. solve x3-x2-1=0 on interval [1,2] with accuracy 10-5 Use Newton's method to compute 115with accuracy 10-6 Construct Newton's iteration algorithm for computing Va