prcrocks77
prcrocks77 prcrocks77
  • 10-09-2016
  • Mathematics
contestada

If x-3 and x-1/3 are both factors of of ax^2+5x+ab,then show that a=-3/2

Respuesta :

umermjd11
umermjd11 umermjd11
  • 10-09-2016
since x-3 and x-1/3 are factors

(x-3)(x-1/3)= x²-3x-(1/3)x+1= x²-(10/3)x+1

to make -(10/3)x to 5x multiply by -(3/10)*5= -3/2

-(3/2)(x-3)(x-1/3)= -(3/2)x²+5x-3/2

Now by comparing -(3/2)x²+5x-3/2 with ax^2+5x+ab

you can see that a= -3/2
Answer Link

Otras preguntas

Help me write a short story
Carbon dioxide rich blood is carried in blood vessels called?
This is the part of the plot sequence where there is the highest tension in the story—where a development for the resolution starts to occur:
Which of the following elements would form metallic bonds?Check all that apply. Silver Xenon Rhenium Bismuth Lithium
The temperature levels in a a nuclear reactor are maintained primarily by the use of
Which sentence correctly punctuates its participial phrase? Subjected to ridiculous laws, Jews were prevented from joining their Dutch friends in many social
Cells spend most of their time dividing (in other words, in mitosis). question 7 options: a. True b. False
Can someone help me please. -4-(4+3i)
help me solve this plzz
When was the last time a senator was expelled from the u s senate?