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koban [17]
3 years ago
12

(7x2 + 4x + 10) - (3x2 + 2x - 6)

Mathematics
2 answers:
Sergio [31]3 years ago
7 0

Answer:

(7×2 + 4x + 10) - ( 3×2 + 2x - 6)

(14 + 4x + 10) - ( 6 + 2x - 6)

(4x + 14 +10) - ( 2x + 6 - 6)

(4x + 24) - ( 2x )

4x + 24 - 2x

4x - 2x + 24

2x + 24

Step-by-step explanation:

clear bracket

All multiplication , subtraction and addition

should be first done in the bracket

After clearing bracket,

then subtract the left answer from the right answer

To get your final answer

Vedmedyk [2.9K]3 years ago
6 0

Answer:

4x^2 +2x +16

Step-by-step explanation:

7x2 + 4x + 10) - (3x2 + 2x - 6)

Distribute the minus sign

7x2 + 4x + 10) - 3x2 - 2x + 6

Combine like terms

7x2 + 4x + 10)

- 3x2 - 2x + 6

-------------------------

4x^2 +2x +16

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Answer:

x = t

y = -t

z = (17-6t)/5

Step-by-step explanation:

First we will write down Equation 1 and Equation 2

4x-2y+5z = 17------(1)

x + y = 0--------(2)

Since we are asked to express our answer in terms of the parameter t so lets suppose x = t and  y = -t

Now substitute the value of x and y in equation (1) we get

4(t) -2(-t) +5z = 17

6t + 5z = 17

5z = 17 -6t

z = (17-6t)/5

hence we get the following answer

x = t

y = -t

z= (17-6t)/5

we can also verify our answer by substituting the values of x ,y and z in any of the two equations above, for example lets substitute these values in equation 1

4(t) -2(-t) + 5((17-6t)/5)) = 17

6t + 17 -6t = 17

6t -6t = 17 -17

0 = 0

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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