Question

Factorise 2 x cube ➖3x square ➖17 x ➕30 by hit and trial method pls help

Answer 1

Answer:

Factorise 2 x cube ➖3x square ➖17 x ➕30

Answer 2

Step-by-step explanation:

f(-1)=2(-1)³-3(-1)²-17(-1)+30

f(-1)=-2-3+17+30

f(-1)=-5+47

f(-1)=42

f(-3)=2(-3)³-3(-3)²-17(-3)+30

f(-3)=-54-27+51+30

f(-3)=-81+81

f(-3)=0

x+3 is also the factor of the given polynomial

2x³-3x²-17x+30/x+3

by dividing it we will get the quotinent 2x²-9x+10

it is also the factor of the given polynomial

2x²-9x+10

2x²-5x-4x+10

x(2x-5)-2(2x-5)

(2x-5)(x-2)

therefore x=5/2 or x=2