Question

please tell me the answer fast​

Answer 1

Step-by-step explanation:

case 1, sum of 4+3x and 5-4x+2x^2

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

=. 9-x+2x^2

case 2, sum of 3x^2-5x and -x^2+2x+5

=(3x^2-5x)+(-x^2+2x+5)

=2x^2-3x+5

case 3, subtract case 1 from case 2

= ( 9-x+2x^2)-(2x^2-3x+5)

=3x+4

Answer 2

Answer:

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