(8a^3-2a) - (7a^2-2a^3-5a)
If you could please just show me and tell me how to work this out
If you could please just show me and tell me how to work this out
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(8a^3-2a) - (7a^2-2a^3-5a)
First, since the sign in front of the second bracket is negative, you'll reverse all of the signs (i.e. positive becomes negative, negative becomes positive
8a^3-2a - 7a^2 + 2a^3 + 5a
Next, gather the like terms. a^3 with a^3, a^2 with a^2, a with a, and single numbers together
8a^3 + 2a^3 - 7a^2 - 2a + 5a
Then add the like terms:
10a^3 - 7a^2 + 3a
First, since the sign in front of the second bracket is negative, you'll reverse all of the signs (i.e. positive becomes negative, negative becomes positive
8a^3-2a - 7a^2 + 2a^3 + 5a
Next, gather the like terms. a^3 with a^3, a^2 with a^2, a with a, and single numbers together
8a^3 + 2a^3 - 7a^2 - 2a + 5a
Then add the like terms:
10a^3 - 7a^2 + 3a
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If you mean simplifying, then:
(8a^3-2a) - (7a^2-2a^3-5a)
= 8a^3 - 2a - 7a^2 + 2a^3 + 5a
= 10a^3 - 7a^2 +3a
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For |x| = 4
The |x| means absolute function. If you were to plot this on a graph, both the positive and negative values of x will be give a positive output.
Example: |4| = 4 and |-4| = 4
Therefore, x can be either + 4 or - 4
(8a^3-2a) - (7a^2-2a^3-5a)
= 8a^3 - 2a - 7a^2 + 2a^3 + 5a
= 10a^3 - 7a^2 +3a
=============
For |x| = 4
The |x| means absolute function. If you were to plot this on a graph, both the positive and negative values of x will be give a positive output.
Example: |4| = 4 and |-4| = 4
Therefore, x can be either + 4 or - 4
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(8a^3 + 2a^3) + (0 - 7a²) + (-2a + 5a)
=> 10a^3 - 7a² + 3a
=> 10a^3 - 7a² + 3a
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(8a^3-2a) - (7a^2-2a^3-5a)=
8a^3-2a - 7a^2+2a^3+5a=
10a^3-7a^2+3a
|x| = 4
x = 4 and -4
8a^3-2a - 7a^2+2a^3+5a=
10a^3-7a^2+3a
|x| = 4
x = 4 and -4