SOLUTION: Give exaxt and approximate sollutions to three decimal places... y^2

SOLUTION: Give exaxt and approximate sollutions to three decimal places... y^2 - 10y + 25=16

Question 266157: Give exaxt and approximate sollutions to three decimal places... y^2 - 10y + 25=16
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Subtract 16 from both sides.

Combine like terms.

Notice that the quadratic is in the form of where , , and

Let's use the quadratic formula to solve for "y":

Start with the quadratic formula

Plug in , , and

Negate to get .

Square to get .

Multiply to get

Subtract from 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 solutions are or