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3 years ago

10

With that picture it asks: who got it right, is each simplified expression equivalent to the original expression and explain how

you know. It also asks How would you explain the correct procedure to the student who made the error

1 answer:

rjkz [21]3 years ago

5 0

Hope it helps!
#MissionExam001

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Find K: mx=p(z/x+k + 2s/y)

ivann1987 [24]

Answer:

$-\frac{2s}{y} -\frac{z}{x} +\frac{mx}{p} =k$

Step-by-step explanation:

$mx=p(\frac{z}{x} +k+\frac{2s}{y} )$ - Divide by p

$\frac{mx}{p} =(\frac{z}{x} +k+\frac{2s}{y} )$ - Subtract the 2 fractions

$-\frac{2s}{y} -\frac{z}{x} +\frac{mx}{p} =k$

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3 years ago

Which will result in a perfect square trinomial (3x-5) (-3x-5)?

makvit [3.9K]

Answer:

-9x² + 25

Step-by-step explanation:

To solve, use FOIL. FOIL:

First

Outside

Inside

Last

Solve "First":

(3x)(-3x) = -9x²

Solve "Outside":

(3x)(-5) = -15x

Solve "Inside":

(-5)(-3x) = +15x

Solve "Last":

(-5)(-5) = +25

Combine like terms:

-9x² - 15x + 15x + 25

-9x² (-15x + 15x) + 25

-9x² + 25

-9x² + 25 is your answer.

~

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