Answer:
f(x)= -54x -4
g(x)= -3x -2
f+g)( x)= -54x -4 -3x -2 = -57x -6
The factored form of given equation y = x^2 + 4x - 21 is (x + 7)(x – 3)
<u>Solution:</u>
Given, equation is 
We have to factor the above equation
Now, take the expression 

"4x" can be splitted as (7 - 3)x

"21" can rewritten as 

Taking "x" as common from first two terms and "3" as common from next two terms

Taking "x + 7" as common term,

Hence, the factored form of given equation is y = ( x + 7 )( x – 3 )
C)5.9161
I think you're talking about square root
Answer:
70
Step-by-step explanation:
triangle is 180deg in total thus,
Answer:
17) 3 18) 3
Step-by-step explanation: