mumadally mumadally
  • 24-06-2020
  • Mathematics
contestada

find a quadratic polynomial whose sum and and product is -7 and -2

Respuesta :

abidemiokin
abidemiokin abidemiokin
  • 29-06-2020

Answer:

x²+7x-2 = 0

Step-by-step explanation:

The general form of a quadratic equation with roots a and b is expressed as shown;

x²-(sum of root) x + (product of roots) = 0

x² - (a+b)x + ab = 0 ... 1

Given the sum of roots a+b = -7

Product of roots ab = -2

Substituting this values in equation 1 above wil give;

x²-(-7)x+(-2) = 0

x²+7x-2 = 0

The resulting quadratic polynomial is x²+7x-2 = 0

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