If A, B are the zeroes
of, the quadratic polynomial
X²+5X-10 then find
the value of A² + B²​

1 thought on “If A, B are the zeroes<br />of, the quadratic polynomial<br />X²+5X-10 then find<br />the value of A² + B²​”

1. Answer:

   A²+B² = 5

   Step-by-step explanation:

   Quadratic equ is in the form of,

   x²–(A+B)x+AB = 0

   x²+5x-10 = 0

   A+B = -5 AB = -10

   (A+B)² = A²+B²+2AB

   (-5)² = A²+B²+2AB

   25 = A²+B²+2(-10)

   A²+B² = 25-20

   = 5

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