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Complete the square

**r**^2 + 3r = 2 (**r**+ 3/2)^2 - 9/4 = 2 (**r**+ 3/2)^2 = 2 + 9/4 (**r**+ 3/2)^2 = 17/4**r**+ 3/2 = +/- Sqrt 17/4**r**= - 3/2 +/- Sqrt 17/4 If you need to go further**r**= - 3/2 + 2.0615 = 0.5615**r**= - 3/2 - 2.0615 = - 3.56151 Answers · Science & Mathematics · 16/08/2010

π(

**r**+6) ² = 15(2π**r**) + 2 πr² First, recognize that since everything on both... out of the equation entirely. π(**r**+6) ² = 15(2π**r**) + 2 πr² π(**r**+6) ² = π[15(2r) + 2r²] (**r**+6...5 Answers · Education & Reference · 20/09/2010

✰Answer✰

**r**= (-3y - 2k)/(a - 1) ✐Derivation✐ 2k + ar =**r**- 3y Try different... is the better way to solve for**r**. ar =**r**- 3y - 2k ar -**r**= -3y - 2k Factor the left side.**r**(a - 1) = -3y - 2k**r**= (-3y - 2k)/(a...3 Answers · Science & Mathematics · 27/07/2012

GL(n,

**R**) is the group of nxn invertible matrices under matrix multiplication, and... with determinant 1. Now first we have to show that SL(2,**R**) is a subgroup of GL(2,**R**). Clearly the identity element...1 Answers · Science & Mathematics · 06/04/2012

I use DVD+

**R**but it depends on your DVD burner. Most older...1) The DVD-**R**(pronounced "DVD dash**R**") and -RW media formats are officially approved...5 Answers · Consumer Electronics · 26/12/2006

(

**r**^(2)-36)/((**r**+6)^(2)) The binomial can be factored using the difference...difference of squares formula is a^(2)-b^(2)=(a-b)(a+b). ((**r**-6)(**r**+6))/((**r**+6)^(2)) Reduce the expression by canceling out...5 Answers · Science & Mathematics · 06/03/2010

DVD-

**R**created by the DVD Forum DVD+**R**created...operate almost exactly the same. However, on the technical level, a DVD-**R**is 4,707,319,808 bytes and a DVD+**R**is 4,700...2 Answers · Consumer Electronics · 03/12/2008

**r**- 2s = 14 Solve for s: Subtract**r**off both sides: -2s = 14 -**r**Multiply both sides by -1 to avoid trouble later: 2s =**r**- 14 Divide by 2: s = (**r**- 14)/25 Answers · Science & Mathematics · 21/09/2012

The Japanese '

**r**' is a mix of what is called an alveolar flap and an alveolar...a trill). The alveolar flap is the same as a Spanish '**r**' in the middle of a word. Imagine the Croatian '**r**', but...3 Answers · Society & Culture · 25/06/2015

(π

**r**^2h)/(2πrh+2π**r**^2)<1/3 (π**r**^2)/(2π**r**+2π**r**^2)<1/3 (π**r**^2)/2π**r**(1+**r**)<1/3**r**/2(1+**r**)<1/3**r**<...2 Answers · Science & Mathematics · 24/08/2012