3 years ago

If x power 2 - x- 6 and x power 2+3x- 18 have a common factor ( x -a ) then find the value of a

Mathematics

1 answer:

RoseWind [281]3 years ago

8 0

Answer:

a = 3

Step-by-step explanation:

Factorise both expressions\x² - x - 6 = (x - 3)(x + 2)

x² + 3x - 18 = (x - 3)(x + 6)

Thus both expressions have a common factor of (x - 3) , thus

a = 3

You might be interested in

3x3-27x=0<br> Solve by factoring a

Eddi Din [679]

After factoring $3x^3-27x=0$ the solutions are x=0 , x=3, x= -3

Step-by-step explanation:

We need to solve by factoring:

$3x^3-27x=0$

Solving:

$3x^3-27x=0$

Taking 3x common:

$3x(x^2-9)=0$

Now using formula $a^2-b^2=(a-b)(a+b)$

$3x((x)^2-(3)^2)=0\\3x(x-3)(x+3)=0$

$3x=0\,\,and\,\,x+3=0\,\,and\,\,x-3=0\\x=0\,\,and\,\,x=-3\,\,and\,\,x=3\\$

So, After factoring $3x^3-27x=0$ the solutions are x=0 , x=3, x= -3

Keywords: Factorization

Learn more about Factorization at:

#learnwithBrainly

5 0

3 years ago

Plus help I need it fast

GrogVix [38]

Answer:

Rains and Splash

Step-by-step explanation:

2 verbs rains and splash

5 0

3 years ago

Read 2 more answers

Describe the diagram below using correct geometric names

bagirrra123 [75]

Angles PQT and RQS are vertical angles and angles PQR and TQS are vertical angles.

angle PQS and TQR are straight angles

angles TQP and PQR form a linear pair. they are also adjacent by default. the other angles have these same features.

that should bout do it. hope it helped!

7 0

3 years ago

what is the realtionship between the value of the digital 4 in the numbers 5,412 and the number 54,123?

REY [17]

Times 10 400 times ten is 4000

6 0

2 years ago

Read 2 more answers

What is the third derivative of tan x?

azamat

The First is sec^2(x). Second is 2sec^2tanx. From that you get 2[2sec^2xtan^x+sec^4x]

4 0