y = x 2 − 2x − 1
a=1
b = −2
c = −1
∆ = b 2 − 4ac
=8
x =−
b
2a
y = x 2 − 2x − 1
a=1
b = −2
c = −1
∆ = b 2 − 4ac
=8
1
x =−
b
2a
y = x 2 − 2x − 1
a=1
b = −2
c = −1
∆ = b 2 − 4ac
=8
1−
√
2
1
1+
√
2
x =−
b
2a
y = x 2 − 2x − 1
a=1
b = −2
c = −1
√
∆
2a
1−
√
2
∆ = b 2 − 4ac
√
∆
2a
1
=8
1+
√
2
x =−
b
2a
y = ax 2 + bx + c
a=1
b = −2
c = −1.00
√
√
∆
2a
∆
2a
1
∆ = b 2 − 4ac
= 8.00