Question

12. 9a (6a -- 5b) - 12a² (6a - 5b)
12​

Answer 1

Answer:

Step-by-step explanation:

9a(6a-5b)-12a2(6a-5b)

Final result :

-3a • (6a - 5b) • (4a - 3)

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(9a • (6a - 5b)) - ((22•3a2) • (6a - 5b))

Step 2 :

Equation at the end of step 2 :

(9a • (6a - 5b)) - (22•3a2) • (6a - 5b)

Step 3 :

Equation at the end of step 3 :

9a • (6a - 5b) - (22•3a2) • (6a - 5b)

Step 4 :

Pulling out like terms :

4.1 Pull out 6a-5b

After pulling out, we are left with :

(6a-5b) • ( 9a * 1 +( 22 • 3a2 * (-1) ))

Step 5 :

Pulling out like terms :

5.1 Pull out like factors :

9a - 12a2 = -3a • (4a - 3)

Final result :

-3a • (6a - 5b) • (4a - 3)

Answer 2

Step-by-step explanation:

54a²-45ab-72a³+60a²b

rearrange

(-72a³+54a²)+(60à²b-45ab)

9a²(-8+6)+