Question

please REALLY help question is on attachment!!!!

Answer 1

RATINONLIZE THE DENOMINTOR

Answer 2

if we simplify the bottom we get
\[\sqrt{7}-2\]

Answer 3

did you already combine like terms in the denominator?

Answer 4

we have to multiply by its conjugate
\[\sqrt{7}+2\]
to get rid of the radical on the bottom, to make the equation stay equal we multiply by the conjugate/conjugate which equals 1, anything times 1 is itsself so it doesnt change the equation

Answer 5

the top (5) times the conjugate is
\[5\sqrt{7} + 10\]

Answer 6

on the bottom it is
\[3\]

Answer 7

so we have