Question

if two zeros of polynomial x3+5x2+7x+3 are -1 and -3 then find the third zeroes

Answer 1

Answer:

• f(x)=x3+5x2+7x+3
• roots= -1 and -3
• So first of all, we make an equation= (x+1)×(x+3)
• => x2+3x+x+3
• =>x2+4x+3

Now,

So we divide x3+5x2+7x+3 by x2+4x+3

we find (x+1) as quotient.

from here we find the other root is (x+1)=>0 so,

x=-1

Step-by-step explanation:

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