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2 years ago

Solve the equation by factoringx^-2x=15

Mathematics

1 answer:

Reil [10]2 years ago

4 0

Step-by-step explanation:

Add one to both sides of the equation:

$x^2 - 2x + 1 = 15 + 1$

$\Rightarrow (x - 1)^2 = 16$

Taking the square root of the equation above, we get

$x - 1 = \pm 4$

$x = 1 \pm 4 = 5, -3$

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2 years ago

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Vlad1618 [11]

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2 years ago

Can someone please please help me on this algebra problem I’m stuck on answering the question?

Rudik [331]

Explanation:

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4 0

1 year ago

Which expression represents the phrase ''4 times as much as the sum of 15 and 9'' A. 4 x (15+9) B. (4 + 15) x 9 C. 4 + 15 x 9 D.

expeople1 [14]

A. 4 × (15 + 9)
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3 0

2 years ago

Read 2 more answers

Out of a total of 2,000 boxes, 40% were red. 50% of the red boxes were sold. a. How many red boxes were sold? Answer: _____ b. H

Natalija [7]

Answer:

400 red boxes were sold

Step-by-step explanation:

Step 1: Our output value is 2000.

Step 2: We represent the unknown value with x.

Step 3: From step 1 above,2000=100%.

Step 4: Similarly, x=40%.

Step 5: This results in a pair of simple equations:

2000=100%

x=40%(2)

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

2000/x = 100%/40%

Step 7: Again, the reciprocal of both sides gives

x/2000 = 40%/100%

x=800

Therefore, 40% of 2000 is 800

and to find 50% just divide by 2

3 0

3 years ago

Solve the equation by factoringx^-2x=15​

Solve the equation by factoringx^-2x=15