Solve x2 + 2x + 9 = 0.

x equals negative 2 plus or minus 4 I square root of 2
x equals negative 2 plus or minus 2 I square root of 2
x equals negative 1 plus or minus 4 I square root of 2
x equals negative 1 plus or minus 2 I square root of 2
Question 2(Multiple Choice Worth 2 points)
(02.07)

Solve −2x2 +3x − 9 = 0.

x equals quantity of 3 plus or minus 3i square root of 7 all over 4
x equals quantity of 3 plus or minus 9i square root of 7 all over 4
x equals quantity of negative 3 plus or minus 3i square root of 7 all over 4
x equals quantity of negative 3 plus or minus 9i square root of 7 all over 4
Question 3(Multiple Choice Worth 2 points)
(02.07)

Solve x2 − 3x = −8.

x equals quantity of 3 plus or minus I square root of 29 all over 2
x equals quantity of 3 plus or minus I square root of 23 all over 2
x equals quantity of negative 3 plus or minus I square root of 29 all over 2
x equals quantity of negative 3 plus or minus I square root of 23 all over 2
Question 4(Multiple Choice Worth 2 points)
(02.07)

Solve −2x2 − 16x − 44 = 0.

x equals negative 8 plus or minus I square root of 6
x equals negative 8 plus or minus 2i square root of 6
x equals negative 4 plus or minus i square root of 6
x equals negative 4 plus or minus 2i square root of 6
Question 5(Multiple Choice Worth 2 points)
(02.07)

Solve 5x2 = −30x − 65.

x = −3 ± 2i
x = −3 ± 4i
x = −6 ± 2i
x = −6 ± 4i