How can you obtain a result of -1.02x + 2.29y using the two expressions below

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Ineed on this question me get the answer