Question

Which of the following quadratic equation has roots -3 and -5 ?
A) X2 -8X+15=0
B) X2 -8X-15=0
C) X2+8X+15=0
D) X2+8X-15=0​

Answer 1

Step-by-step explanation:

b.x2-8x-15=0

I hope it helps you

Answer 2

Given :-

Roots = -5 and -3

To Find :-

Quadratic equation

Solution :-

Sum of roots = -5 + (-3)

Sum of roots = -5 - 3

Sum of roots = -8

Product of roots = -5 × -3

Product of roots = 15

Now

Quadratic polynomial = x² - (α + β)x + αβ

Quadratic polynomial = x² - (-8)x + 15

Quadratic polynomial = x² + 8x + 15

Hence

Option C is correct