Question

answer these questions properly mark u as brainlist​

Answer 1

Answer:

m=9

n=3

Step-by-step explanation:

here x-1 and x+2 are factor of given polynomial...

therefore

x-1=0

.

x=1

.

also

x+2=0

.

x=-2

.

now x=1,-2 must satisfy the given equation...

puting x=1 in it

2+m+n-14=0

m+n=12-------(1)

putting x=-2

2

$2 ( - 2) {}^3 + m( - 2) ^2 + n( - 2) - 14 = 0$

-16+4m-2n-14=0

4m-2n=30

2m-n=15-------(2)

add equation 1 and 2

3m=27

..

m=9

..

putting in equation 1

n=12-9

..

n=3

Answer 2

Is this ur hand writing.? Very nice....