document.write( "Question 993358: I know how to find increasing and decreasing but I am having trouble finding this one: \r
\n" ); document.write( "\n" ); document.write( "f(x) = −2(x + 1)2 + 4\r
\n" ); document.write( "\n" ); document.write( "Increasing:?
\n" ); document.write( "
\n" ); document.write( "Decreasing:?\r
\n" ); document.write( "\n" ); document.write( "Please explain your answer so that I understand. Thank you!
\n" ); document.write( "

Algebra.Com's Answer #612609 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
f(x) = −2(x + 1)^2 + 4
\n" ); document.write( "f(x) = -2(x^2+2x+1) + 4
\n" ); document.write( "f(x) = -2x^2-4x+2
\n" ); document.write( "-------------------
\n" ); document.write( "\"graph%28400%2C400%2C-10%2C10%2C-10%2C10%2C-2x%5E2-4x%2B2%29\"
\n" ); document.write( "----------------------
\n" ); document.write( "Take the derivative to get:
\n" ); document.write( "f'(x) = -4x-4
\n" ); document.write( "---
\n" ); document.write( "Increasing:?
\n" ); document.write( "Solve: -4x-4 > 0
\n" ); document.write( "-4x > 4
\n" ); document.write( "x < -1
\n" ); document.write( "Increasing on (-oo,-1)
\n" ); document.write( "-----------------------------
\n" ); document.write( "Decreasing:?
\n" ); document.write( "Solve: -4x-4 < 0
\n" ); document.write( "-4x < 4
\n" ); document.write( "x > -1
\n" ); document.write( "Decreasing on (-1,+oo)
\n" ); document.write( "===========
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );