Answer:
The factored form of x²-400 is (x+20)(x-20).
Step-by-step explanation:
Given the expression
As the square of 20 is 400. Therefore, rewrite 400 as 20²
⇒ 
Thus, the expression becomes
Thus, the factored form of x²-400 is (x+20)(x-20).
Answer:
GIVE ME MY RAMEN
Step-by-step explanation:
3.
add like terms
30 + 7k = 100
100-30 = 70
70 divided by 7k = 10
k = 10
4. add the z's together
2z - 6 -2 = -10
+ 6 + 2
-10 will be -2 now since we dragged the -6 and -2 to the other side
2z = -2
z = -1
5. 3.2x - 1.7x = 1.5x
1.5x + 5.5 = 10
10 would be 4.5 since we dragged 5.5 to the other side so it would be 10 - 5.5
3.2x = 5.5
x = 1.71875
6.
3/4x - 1/4x = 2/4x
14 - 3 = 11
2/4x = 11
x = 22
I’m assuming you’re looking for a factored answer: 4(x+4)(x+1)
