Question

use factor theorem to factorise the following polynomials
1} 6x³-7x²-8x+5
2}2x⁴-13x³+28x²-23x+6

Answer 1

Answer:

2. ax⁴ + b x³ + c x² + d x + e= 0

akar akar x1, x2 , x3 dam x4

x1 + x2 + x3 + x4  = -b/a

x1x2 + x1x3+ x1x4 + x2x3 +x2 x4 + x3 x4 = c/a

x1x2x3 + x1 x2 x4 + x1 x3 x4 + x2 x3 x4 = -d/a

x1 x2 x3 = e/a

Penjelasan dengan langkah-langkah:

2x⁴ + 13 x³ + 28 x² + 23x + 6= 0

a= 2, b = 13, c = 28 , d= 23 , e = 6

akar akar x1, x2 , x3 dam x4

..

jumlah hasil kali ketiga akar

x1x2x3 + x1 x2 x4 + x1 x3 x4 + x2 x3 x4 = -d/a

= -23/2

= -11.5

Step-by-step explanation: