The correct answer is: " √x − <span>2√b " . </span>_________________________________________________________
The "conjugate" of " √x + 2√b " is: " √x − 2√b " . _________________________________________________________
Explanation: _________________________________________________________ In an expression with 2 (TWO) terms; that is, in a "binomial expression", the "conjugate" of that expression refers to that very expression — with the "sign" in between those two terms—"reverse" (e.g. "minus" becomes "plus" ; or, "plus" becomes "minus" .) . _________________________________________________________
→ So: We are given: " <span>√x + 2√b " . </span> → Note that this is a "binomial expression" ;
→ that is, there are 2 (TWO) terms: " <span>√x " ; and: " 2√b " . _________________________________________________________
To find the "conjugate" of the given binomial expression:
</span>→ " <span>√x + 2√b " ;
</span>→ We simply change the "+" {plus sign} to a "<span>−" {minus sign} ; and rewrite: ___________________________________________________________
</span>→ " √x − 2√b " ;
→ which is the "conjugate" ; and is the correct answer: ___________________________________________________________ → " √x − 2√b " ; is the "conjugate" of the expression: " <span>√x + 2√b " . ___________________________________________________________ </span>→ {that is: " √x − 2√b " ; is the conjugate.}. ___________________________________________________________
