4. (i) Solve the equation 2x2 – 7x + 4 = 0, giving your answers correct to 2 decimal places.

(ii) Hence, find the values of y that satisfy the
equation 2(y – 1)2 – 7(y – 1) + 4 = 0.

Can someone answer this question? : )

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4