Question

simplify = -4a+{-12b-2(7a-3b)}​

Answer 1

Answer:

-18a - 6b

Step-by-step explanation:

-4a + [- 12b - 2(7a - 3b)]

= -4a + [- 12b - 14a + 6b]

= -4a - 12b - 14a + 6b

= -4a - 14a - 12b + 6b

= -18a - 6b

Answer 2

Answer:

6 • (7a2 - 7ab + 12b2)

Step-by-step explanation:

((7a - 3b)2) - (7 • (a + 3b) • (a - 3b))

STEP

2

:

Equation at the end of step

2

:

((7a - 3b)2) - 7 • (a + 3b) • (a - 3b)

STEP

3

:

3.1 Evaluate : (7a-3b)2 = 49a2-42ab+9b2

STEP

4

:

Pulling out like terms :

4.1 Pull out like factors :

42a2 - 42ab + 72b2 = 6 • (7a2 - 7ab + 12b2)

Trying to factor a multi variable polynomial :

4.2 Factoring 7a2 - 7ab + 12b2

Try to factor this multi-variable trinomial using trial and error

Factorization fails

Final result :

6 • (7a2 - 7ab + 12b2)