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Liula [17]
3 years ago
15

What is equivalent to the expression (x+3)(x-7)+(x+8)(x+3)

Mathematics
1 answer:
MakcuM [25]3 years ago
8 0

Answer:

2x^2+7x+3

Step-by-step explanation:

(x+3)(x-7)+(x+8)(x+3)

(x^2-4x-21)+(x^2+11x+24)

x^2-4x-21+x^2+11x+24

2x^2+7x+3

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How much do I need to subtract from 67/10 to make 6
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Answer:

0.7

Step-by-step explanation:

67/10 is the same as 6.7 when you subtract the 0.7 you will remain with 6

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3 years ago
Find an equation of the line having the given slope and containing the given point.
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HELP
4 0
2 years ago
Identify the underlined place in 83.5851. Then, round the number to that place.
djyliett [7]
So assuming the underlined decimal is the second 8, let's answer the question.

Hundreds: 0 | Tens: 8 | ones: 3 | . | tenths: 5 | hundredths: 8 | thousandths: 5 | 10 thousandths: 1

So since the second 8 is in the hundredths place, we know it's either B or C.

When we round for 5, we always round up, so the answer would be 83.59

So the answer is B.

Hope this helped! If you have any more questions or don't understand please comment or DM me. :)

6 0
3 years ago
(2a+b)^2 how do you do this
gulaghasi [49]

•  Expand (2a + b)²:

(2a + b)²

= (2a + b) · (2a + b)


Multiply out the brackets by applying the distributive property of multiplication:

= (2a + b) · 2a + (2a + b) · b

= 2a · 2a + b · 2a + 2a · b + b · b

= 2²a² + 2ab + 2ab + b²


Now, group like terms together, and you get

= 2²a² + 4ab + b²

= 4a² + 4ab + b²    <———    expanded form  (this is the answer).


I hope this helps. =)


Tags:  <em>special product square of a sum algebra</em>

3 0
3 years ago
How many digits are in the repetend of the decimal expansion for 2/41
AleksandrR [38]

Answer:

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Step-by-step explanation:

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