Question

obtain quadratic equation if roots are -3 & -7?​

Answer 1

Answer:

x^2+10x+21=0

Step-by-step explanation:

let alpha be -3 and beta be -7

their addition is -10 and their multiplication is +21

therefore formula for equation is x^2 -(-10)x +21 =0

therefore equation is x^2 +10x+21=0

Answer 2

Answer:

$the \: roots \: are \: given \: (x + 3)or \: (x + 7) \: \\ so \\ (x + 3)(x + 7) \\ {x}^{2} + 7x + 3x + 21 \\ {x}^{2} + 10x + 21$

this is your answer ❤️