Thursday

August 21, 2014

August 21, 2014

Posted by **-Untamed-** on Tuesday, October 4, 2011 at 8:50pm.

The expression:

V2(V5-12V3)-V3(V8-2V30) can be written in simplest form aVb-cVd, where a, b, c ,d are all positive integers. The value of a + b + c + d is ________.

So after solving all this out, I arrived at 7V10 - 14V6. That - is beside the 14, and Im only supposed to have positive integers, so does that negative sign mean anything at all *question mark* --Sorry accidentally pressed this button on keyboard, now Im getting all these french letters, so cant paste a question mark.

- Calculus--Reiny -
**bobpursley**, Tuesday, October 4, 2011 at 8:54pmwhat the negative sign means is c is negative.

- Calculus -
**-Untamed-**, Tuesday, October 4, 2011 at 9:04pmBut all a,b,c and d are supposed to be positive integers, and I looked over this again, and its supposed to simplify into aVb-cVd, so that means that the negative sign is supposed to be there, but the integer C is not negative.

- Calculus--Reiny -
**Reiny**, Tuesday, October 4, 2011 at 9:35pm√2(√5-12√3)-√3(√8-2√30)

= √10 - 12√6 - √24 + 2√90

= √10 - 12√6 - 2√6 + 6√10

= 7√10 - 14√6

which is what you got.

comparing this to a√b - c√d

a=7 , b = 10 , c = -14, and d = 6

so

a+b+c+d = 7+10-14+6 = 9

Trust yourself!

**Related Questions**

math 9 - when 5 radical 20 is written in simplest form, the result is k radical ...

algebra - 1.what is the simplest form of the producy sqrt 50x^7y^7 * sqrt 6 xy^4...

Math - Write the expression 2/3sqrt(80)in its simplest radical form A/Bsqrt(C), ...

geometry - Let ABC be a right triangle with ACB =90, AC =6 , and BC =2. E is the...

Math - Let S(n) denote the sum of digits of the integer n. Over all positive ...

Math-Involing i's - 1)What is the product of 5+ Radical (-36) and 1-Radical (-49...

algebra - What s radical 20 is written in simplest radical for, the result is k ...

precal - give the value of each expression in simplest radical form of sine -45 ...

Math - In math we're doing a review sheet and i dont get any of it so can ...

algebra - when 5√20 is written in simplest radical form, the result is 4&#...