Question

8. Find the value of the polynomial 3x – 4x + 7x-5, when x= 3 and also when x= -3.​

Answer 1

Answer:

when x=3

p (x)=3x-4x+7x-5=10x-4x-5

p (3)=10 (3)-4 (3)-5

=30-12-5

=30-17

=13

when x=-3

p (x)=3x-4x+7x-5

=10x-4x-5

=6x-5

=6 (3)-5

=16-5=11

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Answer 2

Answer:

when x=3

P (x)=3x-4x+7x-5=10x-4x-5

p (3)=10 (3)-4 (3)-5

=30-12-5

=30-17

=13

when x=-3

p (x)=3x-4x+7x-5

=10x-4x-5

=6x-5

=6 (3)-5

=16-5-11