Use newton's method to approximate a root of the equation x3+x+5=0 as follows. let x1=? 1 be the initial approximation. a) the second approximation x2 is: b) and the third approximation x3 is: 2) use newton's method to approximate the value of cuberoot(46) as follows: let x1=3 be the initial approximation. a) the second approximation x2 is: 3) use newton's method to approximate a root of the equation 3sin(x)=x as follows. let x1=2 be the initial approximation. a) the second approximation x2 is: b) and the third approximation x3 is: 4) use newton's method to approximate a root of the equation 5x7+4x4+2=0 as follows. let x1=2 be the initial approximation. a) the second approximation x2 is: b) and the third approximation x3 is: 5) use newton's method to approximate a root of the equation e-x = 5+x correct to eight decimal places.6) use newton's method to approximate a root of the equation cos(x2+4) = x3 as follows: let x1=1 be the initial approximation. a) the second approximation x2 is: