sofiafranco0110
sofiafranco0110 sofiafranco0110
  • 01-04-2020
  • Mathematics
contestada

What are the zeros of 2x^2+17x=-21

Respuesta :

nktselepov
nktselepov nktselepov
  • 01-04-2020

[tex]2x^2+17x+21=0\\D=17^2-4*2*21=121=11^2\\x_1=\frac{-17+11}{4} =-1,5\\x_2=\frac{-17-11}{4} =-7[/tex]

zeros of 2x^2+17x=-21 are (-7;0) and (-1,5)

P.S. Hello from Russia

Answer Link

Otras preguntas

Jonathan has been on a diet since January 2013. So far, he has been losing weight at a steady rate. Based on monthly weigh-ins, his weight, w, can be modeled by
true or false? Three common voltage sources are batteries, solar cells, and generators.
copy this figure onto grid paper. draw line to divide the figure into 4 congruent polygons. how do you know the ploygons are congruent
true or false? Three common voltage sources are batteries, solar cells, and generators.
What is the formula for the volume of a cuboid?
In a sale, normal prices are reduced by 12% The sale price of a digital camera is £132.88 Work out the normal price of the digital camera (3marks)
what is the cubic root of - 250
Locate the gerund and identify its use.Wrestling alligators seems both foolish and dangerous.
true or false? Three common voltage sources are batteries, solar cells, and generators.
Why does a pendulum eventually stop swinging?