Question

if the roots of the quadratic equation a square + b square whole the (x square - 2) AC + BD (X + c square + b square is equal to zero are equal prove that a by b is equal to c y d​

Answer 1

Answer:

Discriminant Δ≥0

4(ac+bd)2−4(a2+b2)(c2+d2)≥0

−4(ab−cd)≥0

Simplifying,

(ab−cd)2≤0

A square less than or equal to 0 is 0. This means that

(ab−cd)2=0 , or Δ=0

The roots are hence equal.

use this formula brother