Thu gọn: A = 4. ( 6-x ) + x² . ( 2+3x ) -x . ( 5x-1 ) B = x. ( 5x-3 ) -x ². ( x-1 ) +x. ( 2 ²-6x ) C = -6x ² – 2x. ( -3x-2 ) -4x +2 ( 2-4x ) +8x

0 bình luận về “Thu gọn: A = 4. ( 6-x ) + x² . ( 2+3x ) -x . ( 5x-1 ) B = x. ( 5x-3 ) -x ². ( x-1 ) +x. ( 2 ²-6x ) C = -6x ² – 2x. ( -3x-2 ) -4x +2 ( 2-4x ) +8x”

1. A=4.(6-x)+x^2.(2+3x)-x(5x-1)=24-4x+2x^2+3x^3-5x^2-x=3x^3-3x^2-5x+24

   B=x(5x-3)-x^2(x-1)+x(2^2-6x)=5x^2-3x-x^3+x^2+4x-6x^2=x-x^3

   C=-6x^2-2x(-3x-2)-4x+2(2-4x)+8x=-6x^2+6x^2+4x-4x+4-8x=4-8x

   Bình luận

2. A = 4. ( 6-x ) + x² . ( 2+3x ) -x . ( 5x-1 )

   A=24-4x+2x²+3x³-5x²+x

   A=24-3x-3x²+3x³

   B = x. ( 5x-3 ) -x ². ( x-1 ) +x. ( 2 ²-6x )

   B=5x²-3x-x³+x²+4x-6x²

   B=x-x³

    C= -6x ² – 2x. ( -3x-2 ) -4x +2 ( 2-4x ) +8x

   C= -6x ² +6x²+4x-4x+4-8x+8x

   C=4

   Bình luận