jessihogan jessihogan

13-04-2018
Mathematics

contestada

what are the solutions to 2x^2 + 7x = 4

Respuesta :

dannielle dannielle

13-04-2018

2x^2+7x-4=0
Δ=7^2-4*2*(-4)
Δ=49+32
Δ=81
x1=(-7+V81)/4=(-7+9)/4=2/4=1/2
x2=(-7-9)/4=-16/4=-4

the solutions: x1= 1/2 and x2= - 4

Answer Link

Otras preguntas

Change of species composition as you move within a region from one habitat or locality to another, is called ___________.

whats the biggest thing on the earth

A car on a 25-m2 hydraulic lift platform weighs 15,000 N. If the force on the smaller piston required to lift it is 1/100 its weight, what is the area of the sm

Radicals.See picture

2. How can you tell if you are reaching your health goal?

Role-playing can be used to help people with prejudiced views understand their effect on the affected group. Please select the best answer from the choices prov

Can you show me the answer key to guided reading 4-2 Sparta and Athens

Emilie et sa soeur ______________ les cheveux avant de se coucher ce soir. (se brosser) Group of answer choices ont brossé se sont brossées se sont bross

A period of excessive euphoria, inflated self-esteem, wild optimism, and hyperactivity often accompanied by delusions of grandeur characterizes a(n) _________.A

Which is part of a specific immune response?OA. Looking for antigensOB. FeverOc. Attacks by lysozymesOD. Inflammation