Question

8. Find the value of the algebraic expression
a= 2 b= 1 c = 3
ca)5c2 - 8abc+7​

Answer 1

Step-by-step explanation:

30-18+7

=19

..........

Answer 2

Answer:

$5 {c}^{2} \\ = 5 \times {3}^{2} \\ = 5 \times 9 \\ = 45$

$8abc + 7 \\ = (8 \times 2 \times 1 \times 3) + 7 \\ = 48 + 7 \\ = 55$