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

A quadratic equation   ,....[1] then the solution of this is given by:

         ....[2]

Given the quadratic equation:

We can write this as:

On comparing with [1] we have;

a = 1, b = -5 and c = -2

Substitute these in [2] we have

⇒

Simplify:

Therefore, the exact solutions of the given equations are:

and

6 spoons of sugar for every 21 cups of flour

step-by-step explanation:

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.