Question

f(x)=2x^2+8x+7

Answer 1

what do u want to do with f(x)? its a quadratic representing a parabola.

Answer 2

Yes it is a parabola. They question was given and then told to solve and graph

Answer 3

You can use the quadratic formula to calculate its roots. Graphically, its a parabola with concave upwards and having 2 intersection points with the x-axis. I can give u the graph if u want.

Answer 4

saubik. ok. that would be helpful

Answer 5

the graph...

Answer 6

Saubhik. Thanks!

Answer 7

use the quadratic formula
x=[-b+sqrt(b^2 -4ac)]/2a
x=[-8+sqrt(8^2 -4*2*7)]/2*2
x=[-8+sqrt(64-56)]/4
x=[-8+sqrt(8)]/4
x={-8+2(2)^1/2]/4
x={-4+(2)^1/2]/2 the other is
x={-4-(2)^1/2]/2

Answer 8

using calc x=-1.29289 and the other is
x=-2.707106781

Answer 9

Got it. Thanks!

Answer 10

wc