Answer:
x=−4.350480,−1.669843,7.020324
Step-by-step explanation:
Step 1: Multiply both sides by -x+5.
−x3+x2+34x+56=−x+5
−x3+x2+34x+56−(−x+5)=−x+5−(−x+5)(Subtract -x+5 from both sides)
−x3+x2+35x+51=0
(Use cubic formula)
x=−4.35048,−1.669844,7.020324
Check answers. (Plug them in to make sure they work.)
x=7.020324(Works in original equation)
x=−4.35048(Works in original equation)
x=−1.669844(Works in original equation)
