Exponents with polynomials
Algebra
Level
2
Find b if the polynomial has -1 as one of its root?
The answer is -3.
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1 solution
p(-1)=0 This implies (-1)^3 -b(-1)^2 + 5(-1) -b=0. -1-b-5-b=0 ; -2b-6=0; -2b=6; b=-3;