Question

6. What are the zeros for the function b(t) = (t -5) (t+3) (t-2)?

A. {-5, -2,3}
B. {-3, 2,5)
C. {-5, -3,2}
D. {-2,3,5}

Answer 1

b(t) = (t -5) (t+3) (t-2)

zero of the function is given by

b(t) = (t -5) (t+3) (t-2)=0

such that

(t -5) (t+3) (t-2)=0

i.e., (t -5)=0 and (t+3) =0 and (t-2)=0

consider (t -5)=0

t -5 =0

t+5-5=0+5

t=5

consider (t +3)=0

t +3 =0

t+3-3=0-3

t= -3

consider (t -2)=0

t -2 =0

t+2-2=0+2

t=2

answer is B

Explanation: