When the solution of x2 + 9x − 9 is expressed as 9 plus or minus the square root of r, all over 2, what is the value of r? x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a
a: 117
b: 54
c: 45
d: 9

question 3(multiple choice worth 1 points) (08.03 lc) identifying the values a, b, and c is the first step in using the quadratic formula to find solution(s) to a quadratic equation. what are the values a, b, and c in the following quadratic equation? −5x2 − 9x + 12 = 0

a: a = −9, b = 12, c = 0
b: a = −5, b = −9, c = 12
c: a = 5, b = 9, c = 12
d: a = 9, b = 12, c = 0

question 4(multiple choice worth 1 points) (08.03 mc) solve for x using the quadratic formula: x2 − 6x + 9 = 0 x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a

a: x = 6
b: x = 3
c: x = 1
d: x = 0

6(multiple choice worth 1 points) (08.03 mc) use the quadratic formula to find the exact solutions of x2 − 5x − 2 = 0. x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a

a: x equals 5 plus or minus the square root of 33, all over 2
b: x equals negative 5 plus or minus the square root of 33, all over 2
c: x equals 5 plus or minus the square root of 17, all over 2
d: x equals negative 5 plus or minus the square root of 17, all over 2

question 7(multiple choice worth 1 points) (08.03 mc) the quadratic formula, x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a, was used to solve the equation. 2x2 − 8x + 7 = 0. fill in the missing denominator of the solution. 4 plus or minus the square root of 2, all over blank
a: −16
b: 2
c: 4
d: 14

question 8(multiple choice worth 1 points) (08.03 lc) identifying the values a, b, and c is the first step in using the quadratic formula to find solution(s) to a quadratic equation. what are the values a, b, and c in the following quadratic equation? −6x2 = −9x + 7
a: a = 9, b = 7, c = 6
b: a = −9, b = 7, c = −6
c: a = −6, b = 9, c = −7
d: a = −6, b = −9, c = 7 q

question 9(multiple choice worth 1 points) (08.03 mc) the quadratic equation 4x2 + 45x + 24 = 0 was solved using the quadratic formula, x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a. one solution is −10.69. what is the other solution? round to the hundredths place.
a: 0.51
b: 10.69
c: −1.12
d: −0.56

question 10(multiple choice worth 1 points) (08.03 lc) solve: 25x2 − 30 = 0 round the answer to the nearest hundredth.
a: x = −1.10 and x = 1.10
b: x = −26.15 and x = 1.15
c: x = 0
d: x = −0.83 and x = 0.83