Question

The value of product (3a - 4b + 2) (5a + 6) for a = 1 and b = -2
Select one:
0 143
0 145
O 141
O
140​

Answer 1

Answer:

1st option

Step-by-step explanation:

(3a - 4b + 2) (5a + 6)

Substitute a by 1 and b by -2

=> [ 3 (1) - 4 (-2) +2] [ 5 (1) + 6 ]

=> [ 3 + 8 +2 ] [ 5 +6 ]

=> ( 13 ) ( 11 )

=> 143