108k views
5 votes
Can someone my answers

Simplify completely quantity x squared minus 10 x minus 24 all over x squared minus 3 x minus 108 and find the restrictions on the variable.
quantity x plus 2 over quantity x plus 9, x ≠ −2, x ≠ −9
quantity x plus 2 over quantity x plus 9, x ≠ −9, x ≠ 12
quantity x minus 2 over quantity x minus 9, x ≠ −2, x ≠ −9
quantity x minus 2 over quantity x minus 9, x ≠ −9, x ≠ 12

User DCTLib
by
6.0k points

2 Answers

4 votes

Answer:

x + 2 over x + 9

x doesn’t equal to -9

x doesn’t equal to 12

Explanation:

User Jemerick
by
6.0k points
4 votes

Answer:

Option 2 is correct that is
(x+2)/(x+9) and
x\\eq-9and
x\\eq-12

Explanation:

We have been given with the expression
(x^2-10x-24)/(x^2-3x-108)

We will simplify the given expression by factorisation we will get
(x^2-12x+2x-24)/(x^2-12x+9x-108)

Taking x as common from first two terms in numerator and 2 from last two terms in numerator

Similarly, take x common from first two terms and 9 from last two terms in denominator we will get


(x(x-12)+2(x-12))/(x(x-12)+9(x-12))

After arranging the terms we will get
((x+2)(x-12))/((x+9)(x-12))

Taking out the common factor which is (x-12) from numerator and denominator it will get cancelled we will get


((x+2))/((x+9))

Hence, Option 2 is correct that is
(x+2)/(x+9) and
x\\eq-9and
x\\eq-12

User MacroMan
by
6.1k points