F(x) = x^2 + 4x - 5
[f(a + h) - f(a)] / h
f(a) = a^2 + 4a - 5
f(a + h) = (a + h)^2 +4(a + h) - 5
= a^2 + 2ah + h^2 + 4a + 4h - 5
f(a + h) - f(a) = a^2 + 2ah + h^2 + 4a + 4h - 5 - ( a^2 + 4a - 5)
---------------- ------------------------------------------------------------
h h
= 2ah + h^2 + 4h h (2a + h + 4) 2a + h + 4
------------------- = ------------------- =
h h
Answer:
Step-by-step explanation:
A perfect square trinomial is defined as an expression that is obtained from squaring a binomial equation. The perfect square trinomial is in the form of 
.
The given expression is :
The co-efficient of the x-term in is '16'.
So half of the term 16 ,
and 
Now add 64 to the expression:
Therefore, the perfect square trinomial is
Answer:
Slope = 3
Step-by-step explanation:
Slope = (y2-y1)/(x2 - x1)
In this case,
Slope = (-9 + 3) / (-4 + 2)
= -6/-2
= 3
Answer:
D
Step-by-step explanation:
it is D i did this quiz before.
Answer:
x = 5
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Sum the 3 angles and equate to 180
72 + 6x + 2 + 17x - 9 = 180
23x + 65 = 180 ( subtract 65 from both sides )
23x = 115 ( divide both sides by 23 )
x = 5
