Answer:
the answer is 4
Step-by-step explanation:
16×7= 112
112÷28=4
A = 2k² -k -15
L = k² -9
A/L
the answer is 1.7320508076
f(x) = x^2 + 5
g(x^2 + 5) = (x^2 + 5)^2= x^4 + 5x^2 + 5x^2 + 25 = x^4 + 10x^2 + 25
h(x^4 + 10x^2 + 25)= -2(x^4 + 10x^2 + 25)
-2x^4 - 20x^2 - 50