Question

 If the product of the root of the equation is x² -3x + k = 10 is -2 then k equals​

Answer 1

Answer:

K=8

Step-by-step explanation:

Let the polynomial be ax^2+bx+c=0

Her a=1, b=(-3), and c=(k-10)

And,

Let the roots of this polynomial be m and n respectively,

Now, we know that (m+n)=(-b/a) and (m)(n)=c/a

ATQ,

(m)(n)=(-2)

=> c/a=(-2)

=> (k-10)/1=(-2)

=> k-10=(-2)

=> k=10-2

=> k=8

Hope it helps :)

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