Question

The roots of quadratic equation are 5 and -2 then the equation is ?

(A) x2-3x+10 =0
(B) x2 – 3x – 10 =0
(C) X2 +3x – 10 =0
(D) x2 + 3x + 10 =0
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Answer 1

Answer:

(B)x²-3x-10=0

Step-by-step explanation:

α=5, β=(-2)

Quadratic polynomial

=x²-(α+β)x+αβ

=x²-(5+(-2))x+5×(-2)

=x²-(5-2)x+(-10)

=x²-3x-10

Option B