Question

Solve 2a + 4a (2a + 5b) – 20 ab and verify
the result for a=2, b=-2.​

Answer 1

Answer:

-36

Step-by-step explanation:

put the values of a and b

=2×2+4×2(2×2+5×-2)-20×2×-2

=4+8(4-10)+80

=4+8×-6+80

=4-48+80

=44-80

=-36