02-11-2014
Mathematics

contestada

2b^2+4b–2=0 what is the answer?

Respuesta :

konrad509 konrad509

02-11-2014

[tex]2b^2+4b-2=0\\ 2(b^2+2b-1)=0\\ 2(b^2+2b+1-2)=0\\ 2((b+1)^2-2)=0\\ 2(b+1)^2-4=0\\\ 2(b+1)^2=4\\\ (b+1)^2=2\\ b+1=-\sqrt2 \vee b+1=\sqrt2\\ b=-1-\sqrt2 \vee b=-1+\sqrt2 [/tex]

Answer Link

Otras preguntas

How can x2 + 3x + 1 = 2x2 + 2x + 3 be set up as a system of equations?

Evaluate the following expression using the values given: Find 3x - y - 3z if x = -2, y = 1, and z = -2. -13 -1 1 13

With which of the following was allen ginsburg associated? a. postwar realism b. middle-class values c. beatnik rebellion d. suburban consumerism

BillieÍs monthly cell phone bill includes the cost of cell phone service, 15% tax on the cost of the cell phone service, and a $9.25 data fee. BillieÍs monthly

517 35/50+312 3/100=??????

Weathering and erosion

Which of the following ocean-floor features would contain the newest rocks? Abyssal plain Continental shelf Continental slope Mid-ocean ridge

Each month americans thrown away 2 million tons of leaves and grass.How many tons are thrown away in 48 months?

What is the role of the Joint Cheifs of Staff?

While watching a small fireworks display from a building 204 feet tall, you observe a rocket that travels from ground to eye level in 6 seconds, and explodes. W