Simplify the following expression: NEEED HELP PLLZ:( 2x − 8y + 3x2 + 7y − 12x

A 3x2 − 14x − y

B 3x2 − 10x − y

C 3x2 − 10x − 15y

D 3x2 + 10x − y

Step-by-step explanation:

I'm pretty sure that it is C.3x2-10x-15y

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

ou would have 12 of each