Answer: Let x = amount Linda spent.
x=y-$18
Step-by-step explanation:
NB- I used the symbol to represent that the 2 means squared. I hope this helps
A). F(x)=3x^2
F(x)=3(-3)^2
F(x)=3(9)
F(x)=27
B). F(x)=3x^2
F(x)=3(0)^2
F(x)=3(0)
F(x)=0
C). F(x)=3x^2
F(x)=3(2)^2
F(x)=3(4)
F(x)=12
D). F(x)=3x^2
F(x)=3(5)^2
F(x)=3(25)
F(x)=75
Answer:
√x^2-4
Step-by-step explanation:
Given the expression
√(x+2) * √(x-2)
= √(x+2)(x-2)
Expand
= √x(x)-2x+2x-2(2)
= √x^2-4
Hence the product of the expression will give √x^2-4
For x to be acceptable x^2 - 4 = 0
x^2 = 4
x = ±√4
x = ±2
Acceptable value of x are values that are greater than or equal to ±2
