Question

(3ab)(-5ab)?

Answer 1

Multiple the like-terms in each brackets:
That is:

3 x - 5 = -15
a x a = a^2
b x b = b^2

ANS:\[-15a^2b^2\]

Answer 2

When you times, you add the exponents.
each a and b has an exponent of 1 so
(3ab)(-5ab) = \( (3a^1b^1)(-5a^1b^1) \)

\( (3a^1b^1)(-5a^1b^1) \)

3 times -5 = -15

\( a^1 \times a^1 = a^{1 +1} = a^{2}\)

\( b^1 \times b^1 = b^{1 +1} = b^{2}\)

Put it all together and we have\( -15a^2b^2 \) like compassionate stated.

Answer 3

Allow me to return the favor.

Answer 4

:-D ty

Answer 5

is
−15a2b2