What are the exact solutions of x2 = 5x + 2?

x = x equals 5 plus or minus the square root of thirty-three all over 2

x = x equals negative 5 plus or minus the square root of thirty-three all over 2

x = x equals 5 plus or minus the square root of seventeen all over 2

x = x equals negative 5 plus or minus the square root of seventeen all over 2

Question

Mathematics

Deon Hanson

29 January, 14:02

What are the exact solutions of x2 = 5x + 2?

x = x equals 5 plus or minus the square root of thirty-three all over 2

x = x equals negative 5 plus or minus the square root of thirty-three all over 2

x = x equals 5 plus or minus the square root of seventeen all over 2

x = x equals negative 5 plus or minus the square root of seventeen all over 2

+4

Answers (1)

Know the Answer?

Kendall Wang · Answer 1

x^2 = 5x + 2

x^2 - 5x - 2 = 0

a = 1

b = - 5

c = - 2

x = [-b + - sq root (b^2 - 4 ac) ] / 2a

x = [--5 + - sq root (25 - - 8) ] / 2a

x = [ 5 + - sq root (33) ] / 2

Answer is "a"