Answer:
C. Kalena made a mistake in Step 3. The justification should state: -x²
+ x²
Step-by-step explanation:
Given the function x(x - 1)(x + 1) = x3 - X
To justify kelena proof
We will need to show if the two equations are equal.
Starting from the RHS with function x³-x
First we will factor out the common factor which is 'x' to have;
x(x²-1)
Factorising x²-1 using the difference of two square will give;
x(x+1)(x-1)
Note that for two real number a and b, the expansion of a²-b² using difference vof two square will give;
a²-b² = (a+b)(a-b) hence;
Factorising x²-1 using the difference of two square will give;
x(x+1)(x-1)
Factorising x(x+1) gives x²+x, therefore
x(x+1)(x-1) = (x²+x)(x-1)
(x²+x)(x-1) = x³-x²+x²-x
The function x³-x²+x²-x gotten shows that kelena made a mistake in step 3, the justification should be -x²+x² not -x-x²
Answer:
8
Please Vote Me Brainliest. Thank You.
It would be 3,330 would be ur answer
19% of the voters were in Favor of building the shopping center.
<u>Step-by-step explanation</u>:
- Number of votes in favor of the shopping center = 4,000
- Number of votes against the shopping center = 17,000
Total voters in the city = number of votes in favor of the shopping center + number of votes against the shopping center.
- Total voters = 4000 + 17,000 = 21,000.
Percentage= (No. of votes in favor of shopping center / total voters)
100
⇒ (4000/21,000)100
⇒ (4/21)100
⇒ 19%
∴ 19% of the voters were in Favor of building the shopping center.
