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ivolga24 [154]
3 years ago
8

Find the product (3x-9)^2

Mathematics
1 answer:
Stells [14]3 years ago
4 0

Here are the steps:

(3x-9)^2

(3x-9)(3x-9)

9x^2 - 27x - 27x +81

9x^2 - 54x + 81

good luck ;)


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Find the value of f(3) if f(x) = 4x^2 - 8x 3. <br> a. 3 <br> b. 12 <br> c. 15 <br> d. 18
Vladimir [108]
I hope this helps you



x=3



f (3)=4.3^2-8.3+3



f (3)=36-24+3=15



f (3)=4.3^2-8.3-3=36-24-3=5
3 0
3 years ago
What is the answer to -7=-21-×/4​
NikAS [45]

Answer:

7

Step-by-step explanation:

Put the numbers in order from least to greatest:

5, 0, |-1|, |4|, -2

3 0
3 years ago
Please please help me with this question please now and show your steps
sattari [20]

Answer:

y =  {x}^{2}  - 8x + 7 \\ a = 1 \: and \: b = -  8 \\ the \: line \: of \: symmetry \:  \\ x =  \frac{ - b}{2a}  =  \frac{8}{2}   \\ x = 4(line \: of \: symmetry) \\ y =  {4}^{2}  - 8(4) + 7  \\ = 16 + 32 + 7 = y = 55 \\ vertix \: is \: (4  ,55) \\ y =  {0}^{2}  - 8(0) + 7 \\ y = 7 \\ 0 =  {x}^{2}  - 8x + 7 \\ (x - 7)(x - 1) = 0

6 0
2 years ago
Calculate the value of P and of Q that satisfy the following simultaneous linear equations.
luda_lava [24]

  1. 0.5p -3q =11
  2. 5p +6q =2

1) ×-2

--> 3. -p +6q =-22

2) - 3)

6p =24

p =4

sub into 2)

5(4) +6q =2

20 +6q =2

6q =2 -20 =-18

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5 0
3 years ago
Determine the two ordered pair solutions of the equation y = 2x2 + 3x , given (0, ), and (-2, ).
Rudiy27

Answer:

We conclude that the two ordered pairs (0, 0) and (-2, 2) are the solutions of the equation y = 2x² + 3x.

Step-by-step explanation:

Given the expression

y = 2x² + 3x

Substituting x = 0

y = 2(0)² + 3(0)

y = 0+0

y = 0

  • so when x = 0, y = 0

Thus, the ordered pair is: (0, 0)

Now, substituting x = -2

y = 2x² + 3x

y = 2(-2)² + 3(-2)

y = 8 - 6

y = 2

  • so when x = -2, y = 2

Thus, the ordered pair is: (-2, 2)

Therefore, we conclude that the two ordered pairs (0, 0) and (-2, 2) are the solutions of the equation y = 2x² + 3x.

3 0
3 years ago
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