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Soloha48 [4]
3 years ago
13

4x2 + 8x - 7 - (3x2 - X+9)​

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
6 0

⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✿⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✳︎

Hi my lil bunny!

❀ _____.______❀_______._____ ❀

Let's simplify step-by-step.

4x^2 + 8x - 7- ( 3x^2- x + 9 )

Distribute the Negative Sign:

= 4x^2 + 8x -7 + -1 ( 3x^2 - x + 9)= 4x^2 + 8x-7+ -1 (3x^2) + -1 (-x) + (-1) (9)\\= 4x^2 + 8x + 7 -3x^2 + x + -9

Combine Like Terms:

= 4x^2 + 8x + -7 -3x^2 + x + -9\\= ( 4x ^2 + -3x^2 ) + ( 8x + x) + ( -7 + -9)

So the answer will be :

= x^2 + 9x - 16

❀ _____.______❀_______._____ ❀

Xoxo, , May

⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✿⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✳︎

Hope this helped you.

Could you maybe give brainliest..?

Andreas93 [3]3 years ago
5 0

Answer:

<h2>{x}^{2}  + 9x - 16</h2>

Step-by-step explanation:

4 {x}^{2}  + 8x - 7 - (3 {x}^{2}  - x + 9)

When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression:

4 {x}^{2}  + 8x - 7 - 3 {x}^{2}  + x - 9

Collect like terms

4 {x}^{2}  - 3 {x}^{2}  + 8x + x - 7 - 9

{x}^{2}  + 9x - 7 - 9

Calculate

{x}^{2}  + 9x - 16

Hope this helps...

Good luck on your assignment...

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