Question

find a quadratic equation whose zeroes are (-3,-1)

Answer 1

If zeros are a and b then we can write equation as

(x-a)(x-b)=0

Given roots are -3,-1

so plug them into above formula

(x--3)(x--1)=0

(x+3)(x+1)=0

$x^2+1x+3x+3=0$

$x^2+4x+3=0$

Hence final answer is $x^2+4x+3=0$

Answer 2

x^2 + 4x + 3 is a quadratic having zeroes -3 &-1