3 years ago

How do you expand and simplify (x-8)(x+5)

Mathematics

1 answer:

AVprozaik [17]3 years ago

3 0

The answer is x² +5x -8x

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Drag the tiles to the correct boxes to complete the palrs.

Brut [27]

Answer:

(f+g)(2) = 4

(f-g)(4) = 8

(f ÷g)(2) = 7

(f x g)(1) = 0

Step-by-step explanation:

We are given these following functions:

$f(x) = 2x + 3$

$g(x) = x - 1$

(f+g)(2)

$(f+g)(x) = f(x) + g(x) = 2x + 3 + x - 1 = 3x - 2$

At $x = 2$

$(f+g)(2) = 3(2) - 2 = 6 - 2 = 4$

Then

(f+g)(2) = 4

(f-g)(4)

$(f-g)(x) = f(x) - g(x) = 2x + 3 - (x - 1) = 2x + 3 - x + 1 = x + 4$

At x = 4

$(f-g)(4) = 4 + 4 = 8$

Then

(f-g)(4) = 8

(f ÷g)(2)

$(f \div g)(x) = \frac{f(x)}{g(x)} = \frac{2x+3}{x-1}$

At x = 2

$(f \div g)(2) = \frac{7}{1} = 7$

Then

(f ÷g)(2) = 7

(f x g)(1)

$(f \times g)(x) = f(x)g(x) = (2x+3)(x-1) = 2x^2 -2x + 3x - 3 = 2x^2 + x - 3$

Then

$(f \times g)(1) = 2(1)^2 + 1 - 3 = 3 + 1 - 3 = 0$

(f x g)(1) = 0

4 0

3 years ago

3 x (3^4) = 3x what is x

Llana [10]

Answer:

Step-by-step explanation:

3 x 81 (to the power of 4 is the same as the square, squared, so 9 x 9) = 3x

243 = 3x

81 = x

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2 years ago

In the past month, Ryan has had five pizzas delivered. He kept a record of how long it took to get the

finlep [7]

a)median is 15 minutes

mean is 34

b)true

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2 years ago

1 A student bought a juice pouch for $2.50 and 3

denis-greek [22]

Answer: 5.05 = 3c + 2.50

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3 years ago

Read 2 more answers

Which expression is equivalent to<br> (5 ^-2) (5^-1)?

VladimirAG [237]

Answer:1/125

Step-by-step explanation:

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2 years ago