f(x) = -2x² - 4x - 1
Potrzebuję delty, x1, x2
Δ= -4² - 4 × -2 × -1= 16 - 8= 8
√Δ= 2 √2
x1= 4- 2√2 ÷ -4 = 2( 2 - √2)÷-4=2-√2÷2
x2= 4 + 2√2 ÷ - 4 = 2 ( 2+ √2) ÷ - 4 = 2+√2 ÷2
a= - 2 b= -4 c= -1
delta= (-2)² - 4* -2* -1
delta= 8
√delta = 2√2
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Δ= -4² - 4 × -2 × -1= 16 - 8= 8
√Δ= 2 √2
x1= 4- 2√2 ÷ -4 = 2( 2 - √2)÷-4=2-√2÷2
x2= 4 + 2√2 ÷ - 4 = 2 ( 2+ √2) ÷ - 4 = 2+√2 ÷2
a= - 2 b= -4 c= -1
delta= (-2)² - 4* -2* -1
delta= 8
√delta = 2√2