3 years ago

If (9x − 4)(9x + 4) = ax2 − b, what is the value of a? The value of a is _____________.

Mathematics

1 answer:

AlladinOne [14]3 years ago

3 0

Your answer should be 81 for a. I got this result by multiplying 9 by 9.

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Vera_Pavlovna [14]

Answer: You would put the 35° and the 4x+7° equal to each other.

Step-by-step explanation:

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2. 4x+7=35 -> Subtract 7 from the positive 7 and the 35

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3 years ago

Multiply: 2.7 × (–3) × (–1.2). A. –9.72 B. –10.8 C. 10.8 D. 9.72

Vikentia [17]

Answer: $\text{ D) } 9.72$

Step-by-step explanation:

Here the give expression is,

$2.7 \times(-3)\times (-1.2)$

We can write,

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⇒ Option D is correct.

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2 years ago

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Answer:

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Step-by-step explanation:

Use:

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