$(x-1)(x+2)-(x+5)(x-4)+3(x+1)$

A cura di: Francesco Speciale

Svolgimento:
Eseguendo i prodotti si ha
$(x-1)(x+2)-(x+5)(x-4)+3(x+1)=x^2+2x-x-2-(x^2-4x+5x-20)+3x+3=$
$=x^2+2x-x-2-x^2+4x-5x+20+3x+3=$
Semplificando i termini simili otteniamo
$=3x+15=3(x+5)$.

materiaEspressioni Letterali

$(x-1)(x+2)-(x+5)(x-4)+3(x+1)$

Ti potrebbe interessare

$[4(x-1/2y)(x+1/2y)]^2-(2x-3y)^2(2x+3y)^2-16y^2(2x-y)(2x+y)+(-4y^2)^2$

$[(3ab)^3-(-5ab)^2xxab-(2+ab)^7:(8a^2b^2)^2]:(-3/4a^3b^2)^3$

$[(1/2ab-(1/4a+b)^2+(b+1/4a)(-1/4a+b)]a+(b+1/2a)^3-b^2(3/2a+b)$

$[(1/2x+2/3y+z)^2-(1/2+2/3y-z)^2+1/3yz]^2-3yz^2(4x+3y)$