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Vlada [557]
3 years ago
9

Simplify the expression: x2+x(x-5)-x+7

Mathematics
1 answer:
exis [7]3 years ago
3 0
So to solve this equation we need to simplify the expression like so,
First write out the equation (I assume that you mean x2 as 2x)
2x+x(x-5)-x+7
Distribute
2x+x^2-5x-x+7
Combine like terms
-4x+x^2+7
And thats it! Enjoy!=)
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Step-by-step explanation:

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Consider ΔABC with its centroid at point E and median AD. What is the length of AE if AD = 30?
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Given the system of equations 4x+2y=8 and 5x-3y=4, what is the value of x
MArishka [77]
◆ LINEAR EQUATIONS IN TWO VARIABLES ◆


given \: the \: sytem \: of \: equation \:  -  \\  \\ 4x + 2y = 8 \:  \\ therefore   \\ \\ \: 2x + y = 4   \:  \:  \:  -  -  - eq(1)\\  \\ 5x - 3y = 4 \:  \:  \:  \:  -  -   - eq(2) \\  \\ multiplying \: eq(1) \:  \: by  \:  \:  - 3 \:   \\  \\ we \: get \:   -  \\  \\  - 6x - 3y =  - 12 \:  \:  \:  -  -  - eq(3) \\  \\ solving \: eq(2) \: and \: eq(3) \: simultaneously \\  \\ we \: get \:  -  \\  \\ 11x = 16 \\  \\ x =  \frac{16}{11}  \:  \:  \:  \:  \: ans.
8 0
3 years ago
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jasenka [17]

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Hope This Helps! •v•

6 0
2 years ago
The lengths of the sides of a triangle are 5, 12, and 13. What is the length of the altitude drawn to the side with length equal
mario62 [17]

Answer:  using  A= bh/2   THe height is 9.23

Step-by-step explanation:  First, with the Right Angle at the bottom, usr the sides to compute the area:  12*5=60

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use the formula A= bh/2

60 = 13h/2 ==> 2(60) =13h --> 120/13 = h

h = 9.23

5 0
2 years ago
Read 2 more answers
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