2 years ago

Which factoring method would be best to factor x^2 - 9?

Mathematics

1 answer:

Vinil7 [7]2 years ago

8 0

Answer:

D. difference of squares

Step-by-step explanation:

Both of the terms x^2 and 9 are squares, so their difference is the difference of squares. The factorization of that is a "special form" that can be usefully memorized.

a^2 -b^2 = (a -b)(a +b)

x^2 -9 = (x -3)(x +3)

You might be interested in

A large pool has a faucet to allow water to enter the pool and a drain to allow water to leave the pool.

Mama L [17]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

The quotient of w and 10 is equal to 7

Verdich [7]

Answer:

Step-by-step explanation:

6 0

2 years ago

Vector performed an experiment at a local farm to determine if the addition of bananas to his biomass cow manure recipes helps p

Allisa [31]

Answer:

About 75% of the time, the mixture of cow manure and mashed bananas IS LIKELY to produce MORE biogas than pure cow manure on THIS local farm.

Step-by-step explanation:

(don't worry I guessed and got it correct)

8 0

3 years ago

Read 2 more answers

Please help I really need it

zavuch27 [327]

Its when x+-1 because thats when f of x or f(x) is highest

4 0

3 years ago

How do we calculate the vertex of a quadratic in standard form?

kvasek [131]

Answer:

y = a $x^{2}$ + b x + c .

Step-by-step explanation:

Also (How to do it!):

We can find the vertex of a quadratic equation with these steps:

Get the equation in the form y = ax2 + bx + c.

Calculate -b / 2a. This is the x-coordinate of the vertex.

To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y.

6 0

2 years ago