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Schach [20]
3 years ago
8

(5x^2+2)-(-4x^2+7)+(-3x^2-5)

Mathematics
1 answer:
Kryger [21]3 years ago
8 0

Answer:

9 {x}^{2}  -  3x

Step-by-step explanation:

We want to simplify

(5 {x}^{2}  + 2) - ( - 4 {x}^{2}  + 7) + ( - 3x - 5)

We expand the parenthesis to get;

5 {x}^{2}  + 2  + 4 {x}^{2}    -  7- 3x - 5

We group similar terms to get:

5 {x}^{2}  + 4 {x}^{2}- 3x - 5 + 2 - 7

Combine the terms;

9 {x}^{2}- 3x  + 0

Therefore the simplified expression in standard form is:

9 {x}^{2}  - 3x

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3 years ago
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Showing my work:

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8 0
3 years ago
Harvey plans to use 5 ft of shelving for four shelves whose lengths are to be a series of consecutive even numbers. How many inc
IgorC [24]
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