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hodyreva [135]
3 years ago
5

Solve for x. Simplify completely. x^2-9=55

Mathematics
2 answers:
djverab [1.8K]3 years ago
8 0
★ Exponential reduction ★

x {}^{2}   - 9 = 55 \\ x {}^{2}  = 55 + 9 = 64 \\ x {}^{2}  = 64 = ( + 8) {}^{2}  \\ x =  + 8 \\
we didn't considered -8 because square root of any real number is always positive , or it's yours choice to deal with minus 8 also :)

★✩★✩★✩★✩★✩★✩★✩★✩★✩★✩★
Irina-Kira [14]3 years ago
3 0

Answer:

x= 8 x= -8

Step-by-step explanation:

took the test

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Which one of these dishes would make the food dish the warmest when placed on top of it?
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The answer would most likely be C
8 0
3 years ago
Which step was the first error made? -3\left(2x-3\right)=33−3(2x−3)=33 -6x+6=33−6x+6=33 step 1 -6x=27−6x=27 step 2 \frac{\left(-
Afina-wow [57]

Given:

The equation is

-3(2x-3)=33

The incorrect solution steps are given.

To find:

The first error.

Solution:

We have,

-3(2x-3)=33

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6 0
3 years ago
|7m–56|, if m<8 write without using absolute value
Ilia_Sergeevich [38]

Answer:

56-7m

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l7m–56l m<8

so lets replace m with something smalller then 8, how about 7

so then it would be...

l 7 * 7 - 56 l=

l 49-56 l = l -7 l

but the absulute value of -7 is 7, so how does this help us? well lets see

56-49= 7  this proves that all we have to do is  switch the order giving us the solution 56-7m

hope this helped :)

4 0
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