SOLUTION: 6) Find all real solutions SR(x^2+3x+6) = 4 7) Perform the operation 6 + SR(-18) all divided by 3 thanks...i need help

Question 179452: 6) Find all real solutions SR(x^2+3x+6) = 4

7) Perform the operation 6 + SR(-18) all divided by 3
thanks...i need help

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
I'll do the first one to get you started

6)

Start with the given equation.

Square both sides.

Square 4 to get 16

Subtract 16 from both sides.

Combine like terms.

Notice we have a quadratic equation in the form of where , , and

Let's use the quadratic formula to solve for x

Start with the quadratic formula

Plug in , , and

Square to get .

Multiply to get

Rewrite as

Add to to get

Multiply and to get .

Take the square root of to get .

or Break up the expression.

or Combine like terms.

or Simplify.

So the answers are or
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