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tensa zangetsu [6.8K]
3 years ago
15

Expand and simplify (x-5)(x+5)

Mathematics
1 answer:
BigorU [14]3 years ago
4 0
The answer is X^2 - 25 click on the box for more details or explain.

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Please help explain how to solve problem 16?
Anarel [89]
Here is the problem.....√(15x + 10) = 2x+3

to remove the square root, we do the opposite which is to square everything.

(√(15x + 10))² = (2x + 3)²      (the square negates the square root)
15x + 10 = (2x +3)(2x + 3)    (use the distributive property to continue)
15x + 10 = 4x² + 6x + 6x + 9  (combine like terms)
15x + 10 = 4x² + 12x + 9      (subtract 15x and 10 from each side)
-15x - 10          -15x - 10
0 = 4x² - 3x - 1                      (factor completely)
(x - 1) (4x + 1)                    (set each to equal 0)

x - 1 = 0                4x + 1 = 0
x = 1                      4x = -1
                               x = -1/4

place both into the equation to check for reasonableness...we see the negative number is not reasonable, but the x value of 1 is a solution.

answer is 1
4 0
3 years ago
For which of the following is x=-5 a soulution? select all that apply​
victus00 [196]

Answer:

The answer are B and C

Step-by-step explanation:

-5² + 50 = 25

 |2 x 5| = 10

6 0
3 years ago
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If John owes 300 dollars and pays 50 a week what are the dependent and independent variables ​
podryga [215]
300 dollars would be the independent variable and 50 dollars a week is dependent
7 0
3 years ago
Solve the puzzle
wolverine [178]

Answer:

95891769

Step-by-step explanation:

This is extract from a brain teaser exercise in which sequence is formed to identify the numbers. In this brain teaser we have made combinations of different numbers which lead to the correct answer. The two correct forms of number are given which are used as a base for determining the correct answer.

4 0
3 years ago
WILL MARK YOU BRAINLIEST
Mama L [17]

Answer: c

Step-by-step explanation: now mark brainlist please :)

6 0
2 years ago
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