Answer: ?
Step-by-step explanation:
Answer:last one
Step-by-step explanation:
last one
Times both sides by -1
-8x=x²-20
add 8x both sides
0=x²+8x-20
factor
what 2 numbers multiply to get -20 and add to get 8
-2 and 10
0=(x-2)(x+10)
set to zero
x-2=0
x=2
x+10=0
x=-10
x intercepts at x=-10 and 2 or at the points
(-10,0) and (2,0)
Answer: (x−3)(x+7)
=(x+−3)(x+7)
=(x)(x)+(x)(7)+(−3)(x)+(−3)(7)
=x^2+7x−3x−21
=x^2+4x−21
Answer: 1260
Step-by-step explanation:
The number of permutation of n things in which 'a' things are like , 'b' things are like and so on.. is given by :-

Given : A shipping company devises a messaging consisting of 9 flags hung in a line.
Then, the number of different possible messages constructed from a set of 4 white, 3 red, and 2 blue flags will be :-

Hence, the number of different possible messages constructed from a set of 4 white, 3 red, and 2 blue flags= 1260