An algebra problem by Aquilino Madeira

Algebra Level 2

L e t f ( x ) = 2 x − 1 + 1 a n d g ( x ) = 5 − x S o l v e f o r t h e v a l u e o f x : ( f − g ) ( x ) = 0 ⇔ x = ? ? ? ? \begin{array}{l} \\ Let\quad f(x) = \sqrt {2x - 1} + 1\;and\;\\ g(x) = \sqrt {5 - x} \\ \\ Solve\;for\;the\;value\;of\;x:\\ \\ (f - g)(x) = 0 \Leftrightarrow x = ???? \end{array}


The answer is 1.

Aquilino Madeira by Aquilino Madeira , 60, Portugal

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

Terrell Bombb
Aug 6, 2016

sqrt(2x-1) +1 - sqrt(5-x) = 0 becomes 9 x 2 − 38 x + 29 9x^2 - 38x + 29 , use FOIL method or quadratic formula to find x.

0 Helpful 0 Interesting 0 Brilliant 0 Confused

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...