Math, asked by mahithamahitha09, 8 hours ago

9. From the sum of 4 + 3x and 5 - 4x + 2x², subtract 7x-9-x2 .

Answers

Answered by brainly12332134

1

Answer:

3x² - 8x + 18

Step-by-step explanation:

sum,

4 +3x + 5 - 4x + 2x²

=2x² - x + 9

subtraction,

2x² - x + 9 - (7x-9-x²)

=2x² - x + 9 - 7x + 9 + x²

=3x² - 8x + 18

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