Question

Wartosc liczbowa wyrażenia 2a kwadrat - b dla a=-1 ,b=-2 wynosi?

Answer 1

2a²-b=x

2*(-1)²-(-2)=x

2*1+2=x

2+2=x

4=x

Wynosi 4

Answer 2

2a² - b , a = -1 b = -2

2 × (-1)² - (-2) = 2×1 + 2 = 2+2=4

Answer 3

2a²-b
a=-1
b=-2
2 • (-1)² - (-2) = 2 • 1 +2 = 2+2=4