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lana66690 [7]
3 years ago
7

Expand and simplify (x-3)(x+7)

Mathematics
2 answers:
dedylja [7]3 years ago
7 0
X(x+7) -3(x+7)
x² + 7x -3x -21
x² +4x -21

that's the answer
if you understand and it's correct. don't forget to make my answer the brainliest
andreev551 [17]3 years ago
3 0
Let's multiply each term for the other one.

I mean: x*x; x+7; -3*x; -3*7

So x²+7x-3x-21

We add up like terms.

Final answer: x²+4x-21
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3 years ago
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Artyom0805 [142]

Answer:

576 cm^3

Step-by-step explanation:

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3 0
3 years ago
50 POINTS! QUICKLY Are the pairs of variables x and y the solutions to the equation x^2–2y=7?
Fittoniya [83]

Hi there!

\large\boxed{(5,8) \text{ and } (1.2, -2.78)}}

We are given the equation:

x² - 2y = 7

To verify if each ordered pair is apart of the function, we can plug in their respective x and y values:

1. (5)² - 2(8) = 7

25 - 16 = 9 ≠ 7. This is NOT correct.

2. (-1)² - 2(-3) = 7

1 + 6 = 7. This is correct.

3. (-4)² - 2(-11.5) = 7

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4. (1.2)² - 2(-2.78) = 7

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5 0
2 years ago
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givi [52]

Answer:

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or

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Step-by-step explanation:

600  = 60*10

These are not prime so keep going, breaking 60 and 10 down

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6 and 10 are not prime so keep going ( 5 and 2 are prime)

    = 3*2  * 5*2  * 5*2

All of the numbers are prime, so we normally write them in order from smallest to largest

2*2*2*3*5*5

We can write with exponents

2^3 *3* 5^2

8 0
2 years ago
Write an expression with an exponent that has a value between zero and one
kow [346]
√(4) is equal to 4 raised to the (1/2). 1/2 as an exponent is between 0 and 1 and it means to take the square root.

So, 4^(1/2) = 2 (or -2)
4 0
3 years ago
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