Question

. Choose the value for x that makes the open sentence true.

5 + 4 ● x = 32 + x2

(Points : 1)
5
4
3
2

Answer 1

move the numbers to one side

Answer 2

x^2 - 4x + 27(32-5) = 0

Answer 3

quadratic equation formula
ax^2 + bx + c = 0

Answer 4

x = (-b (+/-) sqrt(b^2 - 4ac))/2a
(plus or minus)

Answer 5

a = 1, b = -4, c = 27

Answer 6

x = (4 + sqrt(16 - 108)) / 2
x = (4 - sqrt(16 - 108)) / 2
16 - 108 = -92
square root of a negative number is "complex", signified by an "i" in the answer

Answer 7

x = ( 4 + sqrt(92)i ) / 2
x = ( 4 - sqrt(92)i ) / 2

Answer 8

x = ( 4 - 9.59i ) / 2
x = ( 4 + 9.59i ) / 2

Answer 9

x = ( -5.59i ) / 2
x = ( 13.59i ) / 2

Answer 10

x = -2.79i or 6.795
(you always have 2 answers for quadratic equations)

Answer 11

2

Answer 12

4 my bad

Answer 13

so its 4.... did i help?

Answer 14

good :)

Answer 15

:] THANK YOU

Answer 16

np