Answer: 16
Step-by-step explanation:
multiplying by negative exponents can be a little tricky. So (1/4x)^-2 becomes 16/x^2 = __/x^2 so the missing number is 16
Answer:

Step-by-step explanation:
First, expand the original equation:
(x + 1)(2x + 3)

Now simplify:

And that's your answer!
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