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3 years ago

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Mathematics

2 answers:

olganol [36]3 years ago

8 0

Answer:

f(2)=-2

Step-by-step explanation:

Roman55 [17]3 years ago

6 0

Answer:

f(2)=-2

Step-by-step explanation:

Find you x value and then look for where y is

So that means you go to horizontal line for 2, and then look where it lines up with the vertical line (-2)

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How do I solve this

sdas [7]

$\bf \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-------------------------------\\\\
\cfrac{2x}{x^2+2x-24}-\cfrac{x}{x^2-36}\quad 
\begin{cases}
x^2+2x-24\implies (x+6)(x-4)\\
--------------\\
x^2-36\implies x^2-6^2\\
(x-6)(x+6)
\end{cases}$

$\bf \cfrac{2x}{(x+6)(x-4)}-\cfrac{x}{(x-6)(x+6)}\impliedby 
\begin{array}{llll}
\textit{thus our LCD is}\\
(x-6)(x+6)(x-4)
\end{array}
\\\\\\
\cfrac{[(x-6)2x]~-~[(x-4)x]}{(x-6)(x+6)(x-4)}\implies \cfrac{2x^2-12x-x^2+4x}{(x-6)(x+6)(x-4)}
\\\\\\
\cfrac{x^2-8x}{(x-6)(x+6)(x-4)}$

3 0

3 years ago

What is 5+3*4-8+2*7 equal to

neonofarm [45]

Answer: 23 is your answer

Step-by-step explanation:

6 0

3 years ago

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Evaluate the expression (2x + y) - z when x= 3, y = 4, z =5

Lapatulllka [165]

Answer:

Step-by-step explanation:

(2x + y) - z

Let x=3 y=4 and z=5

2*3 +4 -5

Multiply and divide first

6 +4 -5

Then add and subtract

10-5

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3 years ago

Which expression represents the phrase, "one fifth the sum of 14 and a number"?

Mkey [24]

Answer:

1/5(14+×)

Step-by-step explanation:

The sum of 14 and x has to be (14+x)

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3 years ago

What is the answer to (-7) x (3) x (-4)

azamat

Answer:

The answer is 84

Step-by-step explanation:

(-7)*(3)*(-4)

negatives cancel out: 7*3*4

Simplify: 84

7 0

3 years ago

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