Which of the expressions below could be factored quickly using the "difference of squares"? Select all that apply.
2 answers:
Answer:
- 81x² - 12, no as 12 is not a perfect square
- x^2 + 25, no as it is a sum of squares
- 4x^2 - 25, yes
- 9x^2 - 16, yes
- x^2 - 50, no as 50 is not a perfect square
- x^2 - 81, yes
- x^2 - 100, yes
Answer:
Difference of squares method is a method that is used to evaluate the difference between two perfect squares.
For example, given an algebraic expression in the form:
can be factored as follows:
From the given expressions, the only expression containing two perfect squares with the minus sign in the middle is the expression in option A.
i.e.
which can be factored as follows:
.
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Answer:
Yes
Step-by-step explanation:
7 = x
5 = y
5 = X + - 2
5 = X - 2
If X is 7 then
5 = 7-2
5=5
yes
Given:
6 girls
4 boys
Probability of 1 girl being chosen: 1/6
Probability of 1 boy being chosen: 1/4
Probability of another boy being chosen: 1/3
1/6 = 0.17 x 100% = 17%
1/4 = 0.25 x 100% = 25%
1/3 = 0.33 x 100% = 33%
17% + 25% + 33% = 75%
The probability that exactly one girl and two boys will receive awards is 75%.
Answer:
What's the question?
Step-by-step explanation:
Answer: -11 + (-13)
Step-by-step explanation: This shows that the stock has decreased by 24.
Answer:
b
Step-by-step explanation: