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Assoli18 [71]
3 years ago
15

What is the solution? x^2 + 7x – 18 = 0

Mathematics
2 answers:
Drupady [299]3 years ago
7 0
When factored, you get (x - 2)(x + 9) = 0
Solve this and you have x = 2, -9
masya89 [10]3 years ago
4 0
X is equal to 2. put 2 in for X and try to solve it
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Expand the following:<br> a) 3(x + 5)<br> b) 4(x-4)<br> c) 2(5x + 1)<br> d) 7(x-9y)
Tema [17]

Answer:

<h3>a. 3x+15</h3><h3>b. 4x-16</h3><h3>c. 10x+2</h3><h3>D. 7x-63y</h3>

solution,

a. \: 3(x + 5) \\  \:  \:  = 3 \times x + 3  \times 5 \\  \:  \:  = 3x + 15

b. \: 4(x - 4) \\  \:  \:  = 4 \times x - 4 \times 4 \\  \:  \:  = 4x - 16

c. \: 2(5x + 1) \\  \:  = 2 \times 5x + 2 \times 1 \\  \:  \:  = 10x + 2

d . \: 7(x - 9y) \\  \:  = 7 \times x - 7 \times 9y \\  \:  \:  = 7x - 63y

Hope this helps..

Good luck on your assignment..

8 0
3 years ago
Read 2 more answers
Simplify fully<br> 2x power two + 9x + 10 ÷ 2x+5 <br> pls need answer quickly
Lunna [17]

Answer:

2x^2+14x+5

Step-by-step explanation:

x^2+9x+5x+5

Combine Like Terms:

=2x^2+9x+5x+5

=(2x^2)+(9x+5x)+(5)

=2x^2+14x+5

7 0
3 years ago
If y = x² - 6x + 11 is written in the form y = a ( x - h )² + k, find the value of ( a + h + k).
Crazy boy [7]

Answer:

6

Step-by-step explanation:

y = x² - 6x + 11

Complete the square.

y = x² - 6x + 9 + 2

y = (x - 3)² + 2

a = 1, h = 3, k = 2

a + h + k = 6

4 0
3 years ago
Read 2 more answers
Complete the square to transform the expression x2 + 4x + 2 into the form a(x − h)2 + k.
Nina [5.8K]

Answer:

Step-by-step explanation:

y = (x^2 + 4x)      + 2

Take 1/2 of the linear term 4/2 = 2 and square that result. 2^2 = 4.

Put it after 4x

y = (x^2 + 4x + 4)   +2  Subtract what you put inside the brackets on the outside.

y = (x^2 + 4x + 4) + 2 - 4      Combine the right.

y = (x^2 + 4x + 4) - 2            Express the brackets as a square.

y = (x + 2)^2 - 2

That's your answer

a = 1

h = 2

k = -2

3 0
3 years ago
How tall is the kite
AveGali [126]
66in? I’m pretty sure
3 0
3 years ago
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