Oblicz wartości wyrażeń dla podanych wartości zmiennych:
(y-2)(y+3)-y(y-6) dla y = - 1 i jedna siódma .
y = - 1 1/7
(y-2)(y+3)-y(y-6) =
y² + 3y - 2y - 6 - y² + 6y =
7y - 6 =
7 * (- 1 1/7) - 6 =
7 * (-8/7) - 6 =
- 8 - 6 = - 14
Pozdrawiam i dowidzenia. :D
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y = - 1 1/7
(y-2)(y+3)-y(y-6) =
y² + 3y - 2y - 6 - y² + 6y =
7y - 6 =
7 * (- 1 1/7) - 6 =
7 * (-8/7) - 6 =
- 8 - 6 = - 14
Pozdrawiam i dowidzenia. :D