Oi
Just calculating the differential. Step by step:

If you want to know where the tangent has no slope:
Answer:
(x-8)(x+7)
Step-by-step explanation:
using quadratic formula we have
x= 
we have:
x^2-x-56=0
a= 1 b=-1 c=-56
so we have:
x=(-(-1)+-sqrt(1^1-4*(1)*(-56)))/(2*1)
x=1+-sqrt(1-4*(-56))/(2)
x=(1+-sqrt(225))/2
x=(1+-15)/2
so we have the roots:
x1=(1+15)/2 =8
x2=(1-15)/2=-7
so the answer is (x-8)(x+7)
Is C and D because 10x^2-6x^2=36+64
4x^2=100
x^2=25
x= -5 or 5
Answer:
31.438
Step-by-step explanation:
yan ppo ang tama sagot
Answer:
A
Step-by-step explanation: