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madam [21]
2 years ago
15

Expand & Simplify

Mathematics
2 answers:
Talja [164]2 years ago
8 0

Answer:

10x^2-15x-5

Step-by-step explanation:

(3x-3)^2 + (x+4)(x-1)

9x^2-18x+9+x^2+3x-4

10x^2-15x+5

DaniilM [7]2 years ago
6 0

Answer:

{(3x - 3)}^{2}  + (x + 4)(x - 1) \\  =  {(3x)}^{2}  - 2 \times 3x \times 3 +  {3}^{2}  + ( {x}^{2}  - x + 4x - 4) \\  =  {(3x)}^{2}  - 18x + 9 +  {x}^{2}   + 3x - 4 \\  = 9 {x}^{2}  +  {x}^{2}  - 18x + 3x + 9 - 4 \\  = 10 {x}^{2}  - 15x + 5 \\ thank \: you

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How can you solve an equation with a variable on both sides
Ne4ueva [31]
It depends. You'd need to give some example, but generally the idea is to put all variables on one side and everything else on the other side.

15 +2x =2+5x\\
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8 0
3 years ago
Read 2 more answers
Three-fifths of the students in a room are girls. One-third of the girls have blond hair. One-half of the boys have brown hair.
yan [13]

Answer:

a. Of all the students, \frac{1}{5} are girls with blond hair.

b. Of all the students, \frac{1}{5} are boys without brown hair.

Step-by-step explanation:

a. You know that \frac{3}{5} of the students are girls (This means that \frac{2}{5} of the studes are boys) and \frac{1}{3} of these girls have blond hair.

Then, \frac{1}{3} of \frac{3}{5} is:

(\frac{3}{5})(\frac{1}{3})=\frac{1}{5}

Therefore, of all the students, \frac{1}{5} are girls with blond hair.

b. You know that \frac{1}{2} of the boys have brown hair.

Then, \frac{1}{2} of \frac{2}{5} is:

(\frac{2}{5})(\frac{1}{2})=\frac{1}{5}

Of all the students, \frac{1}{5} are boys without brown hair.

8 0
3 years ago
Will mark brainiest for the first one with the correct answer.
just olya [345]
The probably of it being coconut or kiwi is 14 over 15
5 0
3 years ago
Read 2 more answers
Can anyone help me find the value pls?
Flauer [41]

The inside angle for B, which is labeled x is the same as the outside angle of D which is labeled as 72, so we know x = 72.

In a parallelogram two angles next to each other equal 180, so angle A and angle B equal 180.

We know B = 72, so A = 180-72 = 108

Angle A is divided in 2 by angle y, so y = 108/2 = 54

Answers: x = 72

Y = 54

4 0
3 years ago
1. $17.04 for 4 packages
yan [13]

answer

they are each $4.26

5 0
3 years ago
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