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3 years ago

Hey can anybody help me out with this question please

Mathematics

2 answers:

IrinaK [193]3 years ago

8 0

Part 1: Math is like another language! Let's translate "The difference between three times a number and seven more than two times the number." "A number" is a variable, let's use x. "The difference between __ and __" means the first blank minus the second blank: so, (three times x) - (seven more than two times x). "More" means to add, and "times" means to multiply. So, the answer is 3x - (2x+7). By the way, I switched 7 and 2x to satisfy standard form.

Part 2: Our expression is 3x - (2x+7). Now, we need to simplify this. First, remove the parentheses: 3x-2x+7. Now, 3x and 2x are LIKE TERMS because they both have "x" in them, so you can subtract their coefficients--that is, 3 and 2. 3x-2x=(3-2)x=1x=x. Substitute that in, and we get our answer: x+7.

Answers: 3x-(2x+7); x+7

vampirchik [111]3 years ago

6 0

Sure, what is the question you need help with

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Answer:

imaginary roots

Step-by-step explanation:

For a quadratic in the form ...

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The best single descriptor is <em>imaginary root</em>.

_____

The roots are (-b±√d)/(2a) = (6 ± 2i√3)/2 = 3 ± i√3. These roots have a rational real part and an irrational imaginary part. When the number with an imaginary part has a non-zero real part, it is called "complex", rather than "imaginary."

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3 years ago

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Answer:

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3 years ago