Jawabanmu

Jawaban paling cerdas!
2014-09-13T18:20:42+07:00
(x + 1) (2x + 2) + (2x + 5) (x - 4)
= (2x² + 2x + 2x + 2) + (2x² - 8x + 5x - 20)
= 2x² + 4x + 2 + 2x² - 3x - 20
= 4x² + x - 18
1 5 1
2014-09-13T18:46:57+07:00
(x+1) (2x+2) + (2x+5) (x-4)
= ( 2x^2 + 2x +2x + 2 ) + (2x^2 - 8x +5x -20)
= (2x^2 + 4x + 2 ) + ( 2x^2 -3x - 20 )
=4x^4 + x -18