4 years ago

Factor completely. 25+70x+49x^2

Mathematics

1 answer:

Neporo4naja [7]4 years ago

5 0

Answer:

(5+7x)^2

Step-by-step explanation:

25+70x+49x^2

This is a perfect square trinomial

a^2 +2ab + b^2 = (a+b)^2

5^2 *2*5*7x+ (7x)^2 = (5+7x)^2

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Step-by-step explanation:

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3 years ago

Liam, Sarah and Emily shared some money in the ratio 2:3:5. Liam got £30 less than Sarah.

blondinia [14]

The number representing Liam's share is 2; for Sarah's share, it is 3. The difference of those is 1, so each 1 unit of share must be £30, the difference between the amount Sarah got and the amount Liam got.

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3 years ago

PLS HELP THIS IS A TEST

Pie

Answer:

D: 7

Step-by-step explanation:

1.75 (7) + 4.50

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3 years ago

(6^3)^2 = A) 61 B) 65 C) 66 D) 69

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Answer

c) 6^6

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4 years ago

Help please out of school due to medical issues. Thank you.

Semenov [28]

Question:

Solution:

Consider the following two functions:

$f(x)=2x+8$

and

$g(x)=x^2+2x-8$

Now, consider the following definition:

$(f-g)(x)=f(x)-g(x)$

thus, we get:

$\begin{gathered} (f-g)(x)=f(x)-g(x) \\ =\text{ (2x+8)-(}x^2+2x-8\text{)} \end{gathered}$

this is equivalent to:

$=\text{ 2x+8-}x^2-2x+8$

this is equivalent to:

$=-x^2+16$

So that, we can conclude that the correct answer is:

$(f-g)(x)=-x^2+16$

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1 year ago