bickerree bickerree

07-07-2015
Mathematics

Answered

if x=-2 is a solution of the equation x^2+bx+6=0 what is the value of b

Verified Answer :

hunaifirst hunaifirst

08-07-2015

u know x = -2

x²+bx+6=0

(-2)²+b(-2)+6 =0
4 -2b +6 = 0
-2b +6+4 =0

-2 b = -10
b= -10/-2
b= 5

Answer Link

Related Questions

What was the first bank in the world

Two planes leave an airport at noon If the eastbound plane flies at 660 mph and the westbound plane flies at 600 mph at what time will they be 2000 miles apart

Hypertension occurs when blood pressure is too high True or False

A waterwheel has a radius of 1 foot and a water bug has attached itself to the wheel at water level as shown in the diagram below As the wheel rotates countercl

Can someone help me with the Gettysburg Address 1 A fundamental theme of the Gettysburg Address is 1 point the condemnation of unnecessary violence the descript

what color is across the color wheel of purple

Here is a histogram displaying the top 30 lifetime batting averages in baseball history This distribution of data shows lots of lifetime averages in the middle

There are 500 sheet of paper in the pack Hannah bought She has used 137 sheets already How many sheets of paper does Hannah have left

A ball rolls down a hill and hits a box The momentum of the ball decreases Which happens to the momentum Select one of the options below as your answer a It is

A 30 kilogram object is acted upon by an impulse having a magnitude of 15 Newtonseconds What is the magnitude of the objects change in momentum due to this impu

Web Analytics Made Easy - Statcounter