Question

PLSSSS HELPPPPP 20 POINTSSSSSS MATHHH

Answer 1

Answer:

$-63b^6$

Step-by-step explanation:

When you multiply two exponents together with the same base, the exponents get added

Here the base is the same ie b

So $b^4 . b^2 = b^{4+2} = b^6$

The constants multiply in the usual sense so 7(-9) = -63

Answer is $-63b^6$