how does this answer come by synthetic division method . step by step explanation
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x⁴+5x³+4x²-3x+9
let x²=z
then
z²+(5z)*✓z+4z-3✓z+9
z²+5✓z³+4z-3✓z+9
making factor
:-
(✓z+3)²(z-✓z-1)
put the value of z
then we get
(x+3)²(x²-x+1)
synthetic division condition
__._______._____._____
a=1. b=-1. c=1
5a-7b+8c
put linear value a b c
we get 20 answer
let x²=z
then
z²+(5z)*✓z+4z-3✓z+9
z²+5✓z³+4z-3✓z+9
making factor
:-
(✓z+3)²(z-✓z-1)
put the value of z
then we get
(x+3)²(x²-x+1)
synthetic division condition
__._______._____._____
a=1. b=-1. c=1
5a-7b+8c
put linear value a b c
we get 20 answer
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