Question

A) (4x-2)+(-3x+1)=
B) (x2 -7x+1)-(3x2-7x+4)=
C) 3x•(x-8)=
D) (x+7)(x-2)=
E) (4x2 +5x)•(y+2)=
ajuda pff​

Answer 1

Resposta:

A) (4x-2)+(-3x+1)=

$4x - 2 - 3x + 1 \\ x - 1$

B) (x2 -7x+1)-(3x2-7x+4)=

${x}^{2} - 7x + 1 - {3x}^{2} + 7x - 4 \\ - {2x}^{2} - 3$

C) 3x•(x-8)=

${3x}^{2} - 24$

D) (x+7)(x-2)=

${x}^{2} - 2x + 7x - 14 \\ {x}^{2} + 5x - 14$

E) (4x2 +5x)•(y+2)=

${4x}^{2}y + {8x}^{2} + 5xy + 10x$