Question

How would I solve this problem?
(2x^2+ 15x +8 )/(2x^2 + 7x +4)

Answer 1

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

Answer 2

What do you want to solve?

Answer 3

Factorise first

Answer 4

Like I must simplify it .

Answer 5

Then see what happens

Answer 6

Yeah thats the part where I am stuck at.
I am just not able to factor it out.

Answer 7

Do you want metto do that 4 you

Answer 8

Yes please but could you explain it too:).

Answer 9

Pas de problem!

Answer 10

use the quadratic formula to solve it...

Answer 11

(2x^2+ 15x +8 )/(2x^2 + 7x +4)
(2x^2+ 15x +8 ) to factorise ....
multiply the 2 in 2x^2 by the + 8 and find a pair of factors that sum to -15
2 * -8 = -16 therefore factors are (1 and -16) now replace the -15 x with 1x (we just write x) and -6x
2x^2+ x -16x +8 ...now group and bracket and further factorise ...
(2x^2+ x) -(16x +8) = x(2x+1)-8(2x+1) the brackets are identicval so their contents are a factor. The other factor is made up from the outside elements x and -8
so we have (2x^2+ 15x +8 ) = (2x+1)(x-8)

Do the same with the other and you get ...
(2x^2 + 7x +4) =(2x^2 + 8x -x+4)
(2x^2 + 7x +4) =(2x+1)(x+4)
now write the fraction in terms of factorised results

(2x+1)(x-8) / (2x+1)(x+4) ...and you will see that (2x+1) factors out leaving
(x-8) /(x+4)

Answer 12

I am soooooo sorry I read -15 instead of +15 so my answer is incorrect.

Answer 13

You will need to compleyte the square or use the quadratic formula as Shankvee suggests

Answer 14

Ok thank you very much:)

Answer 15

the equations clearly do not have integral roots as the discriminant is not a perfect square for both numerator and denominator so the only way is to use the quadratic formula
x=((-b+sqrt(b^2-4ac))/2a
where a,b,c are the coeffecients of x^2 , x and cis constant respectively...

Answer 16

I really do appreciate it.

Answer 17

Are you sure it is +15 and not -15 in the original question because that would make life very easy for you.

Answer 18

Yes they are all plus signs.
Still can you tell me how it would be if it was -15?

Answer 19

no -15 makes no difference it should be a -8 or -2x^2

Answer 20

if you have -8 thenyou can factorise numerator as
2x^2 +16x-x-8
2x(x+8)-1(x+8)
(2x-1)(x+8)

Answer 21

can you guys help me?

Answer 22

yeah mosudan go ahead...
You should ask a question really...

Answer 23

7/12 + 2 2/3 -1.8

Answer 24

7/12=0.58
2*2/3=1.33
so 0.58+1.33-1.8=0.08

Answer 25

is there a way we can do this without a calculator
?