Answer:
The given expression is simplified as 
Step-by-step explanation:
Here,the given expression is (x+9)(x -9)
Using the ALGEBRAIC IDENTITY:
Now, here in the given expression (x + 9)(x -9)
Comparing it the left side of the identity,
we get a = x
and b = 9
The right side of the equation is 
Substituting the value of a and b, we get
⇒ 
= 
Hence, the given expression is simplified as
5x + 4x²(2x + 7) - 6x² - 9x
5x + 8x³ + 28x² - 6x² - 9x
8x³ + 22x² - 4x
This can be simplified to:
2x(4x² + 11x - 2)
I don't know which of those answers you are looking for.
Answer:
Step-by-step explanation:
Rewrite the system of equations as:
Subtract the second equation from the first to isolate 
:
Plug in 
into any of the equations above and solve for 
:
Verify that the solution pair 
works 
Therefore, the solution to this system of equations is:
Answer:
Step-by-step explanation:
The worth of a dime is 10 cents. Converting to dollars, it becomes
10/100 = $0.1
The worth of a penny is 1 cent. Converting to dollars, it becomes
1/100 = $0.01
Vanessa has 6 dimes and 2 pennies. The total amount of money that she has is
(6 × 0.1) + (2 × 0.01)
= 0.6 + 0.02 = $0.62
Joachim has 1 dollar,3 dimes,and 5 pennies. The total amount of money that she has is
1 + (3 × 0.1) + (5 × 0.01)
= 1 + 0.3 + 0.05 = $1.35
Jimmy has 5 dollars and 7 pennies. The total amount of money that he has is
5 + (7 × 0.01)
= 5 + 0.07 = $5.07
The total amount of money that they have is
0.62 + 1.35 + 5.07 = $7.04
Since the game costs $8, then they don't have enough money. The additional amount of money that they need is
8 - 7.04 = $0.96
Idk howbto help u it could be 67 for all i know
