Question

Find the value of a and b such that px is divisible by x- 1 and X+3

px=x^3-ax^ 2-13 X+ b

please answer fast I will mark best answer as a brainliest and will nominate them​

Answer 1

Step-by-step explanation:

p(x)=x³-ax²-13x+b

x-1 is a factor

p(1)=0

p(1)=1³-a(1)²-13(1)+b=0

p(1)=1-a-13+b=0

b-a=12_____(1)

x+3 is a factor

p(-3)=0

p(-3)=(-3)³-a(-3)²-13(-3)+b=0

p(-3)= -27-9a+39+b=0

b-9a= -12_____(2)

(1)-(2)=>8a=24 a=3

b-a=12

b=12+3=15

hope it helps

Answer 2

83992 jdkeoe99020bdndnndmdm