Answer:
765854sdfgh
Step-by-step explanation:
Y=9(x^2+3x-x-3)
y=9(x^2+2x-3)
y=9x^2+18x-27
Answer:
96 m^2
Step-by-step explanation:
The formula for finding the surface area of a cube is 6a^2 where a is a side length.
When you input the given value into the formula you get 6 x 4^2
When you solve that formula, you get 96
Please mark as brainliest ;)
Answer:
Step-by-step explanation:
1) x - 21x = 5
x = x * 1
21x = x * 21
GCF = x
x - 21x = 5
x*(1 -21) = 5
x * (-20) = 5
-20x = 5
x =5/-20
x = -1/4
2) 6n² = 6 * n * n
30n = 6 * 5 * n
GCF = 6*n = 6n
6n² + 30n = 0
6n*(n + 5 ) = 0
6n = 0 or n + 5 = 0
n = 0 n = -5
n = 0 or -5
