Question

4x2 + 8x - 7 - (3x2 - X+9)​

Answer 1

⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✿⭐︎✳︎⭐︎✳︎⭐︎✳︎⭐︎✳︎

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..?

Answer 2

Answer:

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

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...