Question

if 5a-4=11 find the value of 20a^2-15a+20​

Answer 1

Answer:

155

Step-by-step explanation:

Given : 5a-4=11

To find: the value of 20a^2-15a+20

solution:

5a-4=11

5a =11 +4

5a =15

a= 15/5

a = 3

Now put the value of a =3 in the equation=>20a^2-15a+20

20*9-15*3+20

=>180-45+20

=>155

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