Question

Zapisz w jak najprostszej postaci

c) x(x²+ 2x+1)-(-4x³+8x²-6):2

d)12b * b-1/4 + 14 × b²-2b/21 - b-b²/3=
(/= kreska ułamkowa)

Answer 1

c) x(x²+2x+1)-(-4x³+8x²-6)/2 = (x³+2x+1+4x³+8x²-6)/2 = (5x³+2x+8x²-5)/2 = 2,5x³+x+4x²-2,5

d) 12b*b-1/4+14*b²-2b/21-b-b²=12b²-1/4+14b²-2/21b-b-1/3b²=25 2/3b² - 1 2/21b-1/4

Answer 2

c) x(x²+ 2x+1)-(-4x³+8x²-6):2 = x³ + 2x² + x +2x³ -4x²+3= 3x³ -2x² + 3 + x

 

d)12b * b-1/4 + 14 × b²-2b/21 - b-b²/3= 12b² - 1/4 + 14b² -2b/21 - b -b²/3 =26b² -1/4-2b/21-b-b²/3