Question

Divide 21a^3-14a by -7 A.-3a^3+2a B.-3a^3-2a C.-3a^2+2 D.3a^3+2a

Answer 1

For this case we must find the quotient of $21a^3-14a$ between -7:

That is to say:

$\frac {21a ^ 3-14a} {- 7} =\\\frac {21a ^ 3} {- 7} + \frac {-14a} {- 7}$

We know that:

$\frac {21} {7} = 3\\\frac {14} {7} = 2\\\frac {+} {-} = -$

Finally:

$-3a ^ 3 + (2a) =\\-3a ^ 3 + 2a$

Answer:

$-3a ^ 3 + 2a$

Option A

Answer 2

Answer:

The correct answer is A:-3a^3+2a