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3 years ago

-2|x+5|-7=3 solve for x add steps

Mathematics

2 answers:

DIA [1.3K]3 years ago

8 0

No solution since there are no values of x that make the equation true.

snow_lady [41]3 years ago

8 0

Answer:

No solutions

Step-by-step explanation:

-2(|x+5|)-7=3

Add 7 to both sides

-2(|x+5|)-7+7=3+7

-2(|x+5|)=10

Divide both sides by -2

|x+5|=-5

Solve absolute value.

Since an absolute value cannot be negative/less than 0 the answer is no solutions

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

If neither a nor b are equal to zero, which answer most accurately describes the product of (a + bi)(a - bi)?

Scrat [10]

Answer: the correct option is

(D) The imaginary part is zero.

Step-by-step explanation: Given that neither a nor b are equal to zero.

We are to select the correct statement that accurately describes the following product :

$P=(a+bi)(a-bi)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

We will be using the following formula :

$(x+y)(x-y)=x^2-y^2.$

From product (i), we get

$P\\\\=(a+bi)(a-bi)\\\\=a^2-(bi)^2\\\\=a^2-b^2i^2\\\\=a^2-b^2\times (-1)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[\textup{since }i^2=-1]\\\\=a^2+b^2.$

So, there is no imaginary part in the given product.

Thus, the correct option is

(D) The imaginary part is zero.

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Step-by-step explanation:

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