Question

Given polynomials p(x), q(x), and r(x), p(x) + ( q(x) + r(x) ) = ( p(x) + q(x) ) + r(x)
To verify the associative property of addition, begin by finding the sum of the polynomials:

(3x + 4) + ((5x2 - 1) + (2x + 6))

Answer 1

Step-by-step explanation:

(3x+4)+((5*2-1)+(2x+6))

=(3x+4)+(10-1+2x+6)

=(3x+4)+(2x+15)

=3x+4+2x+15

=5x+19

((3x+4)+(5*2-1))+(2x+6)

=(3x+4+10-1)+(2x+6)

=(3x+13)+(2x+6)

=3x+13+2x+6

=5x+19

Answer 2

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Step-by-step explanation:

The red numbers are the answers to the first question