Question

If the value of the expression 3a2 + a + k for a = 1 is 7, then the value of k-3​

Answer 1

Step-by-step explanation:

3a²+ a+ k = 7

a = 1 ( given)

substituting the value

3 × 1²+ 1+ k = 7

3+1+k=7

4+k=7

k=3

value of k-3

k-3

3-3 =0