Question

Find a and b if
2root 7 / root 7 - 4 = a+b root7​

Answer 1

Answer:

2root 7 / root 7 - 4 = a+b root7​

Step-by-step explanation:

$\frac{2\sqrt{7} }{\sqrt{7}-4 }=a+b\sqrt{7}\\\frac{2\sqrt{7} (\sqrt{7}-4)}{(\sqrt{7}-4) (\sqrt{7}+4)}=a+b\sqrt{7}$

then on simplifying

$14/3-8\sqrt{7} /3=a+b\sqrt{7}\\ hence\\a=14/3\\b=-8/3$

Answer 2

Answer:

Hey! Hope you're doing good! Hope you remember me Sis! Well, It's been so long we haven't had a conversation. ☺