Question

If p(x) = 3x+5 Find p(7)minus p(5)

Answer 1

p(x)=3x+7

p(7)=3×7+7

=21+7

=28.

p(5)=3x+7

=3×5+7

=15+7

=22

therefore, p(7) - p(5)

=28-22

=6ans.

Answer 2

Answer : p ( 7 ) = 3 ( 7 ) + 5

= 21 + 5

= 26

p ( 5 ) = 3 ( 5 ) + 5

= 15 + 5

= 20

therefore, p ( 7 ) -- p ( 5 )

= 26 -- 20

= 6