Question

The value of (3a – 4b + 2) × (5a + 6) for a = 1 and b =
-2 is

Answer 1

Given: a = 1 and b = -2

To find: (3a – 4b + 2) × (5a + 6)

Substituting values of 'a' and 'b' in the above equation.

--> [3(1) – 4(-2) + 2] × [5(1) + 6]

--> (3 + 8 + 2) × 11

--> 13 × 11

--> 143

∴ Value of (3a – 4b + 2) × (5a + 6) is 143

Answer 2

Question:-

The value of (3a – 4b + 2) × (5a + 6) for a = 1 and b =-2

Answer:-

$given \: = > a = 1 \: \: \\ = > b = - 2 \\ \\ = > (3 \times 1 - 4 \times ( - 2) + 2) \times (5 \times 1 + 6) \\ \\ = > (3 + 8 + 2) \times( 5 + 6) \\ \\ = > 13 \times 11 \\ \\ = > 143$