Question 928786
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Hi
f(x) = x^4 - x^3 - 7x^2 + 5x + 10 
1 + 1 - 7 -5 + 10 = 0,  16-8-28+10+10 = 0
Using Synthetic Division (x = -1  and x = 2  are roots found by plug and play)
-1	1	-1	-7	5	10
		-1	2	5	-10
	1	-2	-5	10	0
2		2	0	-10	
	1	0	-5	0	
f(x) = (x+1)(x-2)(x^2 - 5)= 0
x = -1, 2, 2.24, - 2.24