Question

Identify the conjugate of: 4+√7

1)√7-4
2)7+√4
3)4+√7
4)4-√7

Answer 1

4) 4 - √7

Answer 2

4 or 1 is the answer
addition is commutative
\[4+\sqrt{7}\]=\[\sqrt{7}+4\]

the conjugate of \[4+\sqrt{7} is 4-\sqrt{7}\]
the conjugate of \[\sqrt{7}+4is \sqrt{7}-4=-4+\sqrt{7}=\sqrt{7}-4\]

Answer 3

since \[4+\sqrt{7}=\sqrt{7}+4\]
then you can say the conjugate is either \[4-\sqrt{7}\] or \[\sqrt{7}-4\]