Question

Find the value of ‘a’ if the value of 3x2+ x – a equals to 20

when x = 2​

Answer 1

Answer:

-6

it is your answer

hope this help you

please mark as brilliant .

Answer 2

Step-by-step explanation:

3 x^2+x-a =20

3(2)^2+2-a =20

3×4+2-a =20

12+2-a =20

14-a =20

-a = 20-14

-a=6