Friday

December 19, 2014

December 19, 2014

Posted by **Lily** on Monday, August 30, 2010 at 9:06am.

Solve: square root of y =(numerator) 5+square root of 2. (Denominator)2

25.5+5square root of 2?

- algebra 1 -
**PsyDAG**, Monday, August 30, 2010 at 9:17amIs this your equation?

y = (5 + √2)/2

Anything divided by 2 would only be half as large.

- algebra 1 -
**Lily**, Monday, August 30, 2010 at 9:37amThe y itself has a square root around it. 5+ square root of 2 is divided by 2.

- algebra 1 -
**Lily**, Monday, August 30, 2010 at 10:13amP.S. There aren't any brackets.

- algebra 1 -
**MathMate**, Monday, August 30, 2010 at 1:56pmThere may not be any brackets explicitly, but whenever there is a numerator, there are implicit brackets around it. The same goes for the denominator.

For example,

Solve: square root of y =(numerator) 5+square root of 2. (Denominator)2

would translate to

√y = (5+√2) / 2

If we omit the brackets, it would become

√y = 5+√2 / 2

which means

√y = 5 + (√2 / 2)

by virtue of the rules of priority of multiplication over addition.

Additional parentheses must be inserted around numerators and denominators in fractions.

Back to your question, assuming the following equation is what you have:

√y = (5+√2) / 2

You can square both sides to give:

y = ±(5+√2)² / 4

=±(25+10√2 + 2)/4

=±(27+10√2)/4

- algebra 1 -
**Lily**, Friday, September 17, 2010 at 8:37amThanks!

**Answer this Question**

**Related Questions**

Algebra - Rationalize each expression by building perfect nth root factors for ...

Algebra - Use the quadratic formula to solve the equation. Give exact answers: ...

College Algebra - I need some help with a handful of questions. I need to see ...

College Algebra - I need some help with a handful of questions. I need to see ...

College Algebra help please - I need some help with a handful of questions. I ...

algebra 1 - This has a fraction in it. Simplify: numerator is 5 square root of ...

Math simplifying mixed radicals - Please help me simplify these following mixed ...

Algebra - I am supposed to "write each expression with a rational denominator" 1...

Math ~CHECK MY ANSWER~ - 1) Which of these is a rational number? a. Pi b. Square...

Math - Rationalize the denominator. Assume that all expressions under radicals ...