3 years ago

HELP PLEASE!

Mathematics

1 answer:

Grace [21]3 years ago

8 0

Answer and workings are in the attachments below.

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The product of (a + b)(a − b) is a2 − b2. (1 point) Sometimes Always Never

jenyasd209 [6]

ANSWER

$\boxed{Always}$
EXPLANATION

The given product is

$( a - b)(a + b)$

This is always equal to

${a}^{2} - {b}^{2}$

The identity

$( a - b)(a + b) = {a}^{2} - {b}^{2}$

is called difference of two squares.

We can verify this by simply expanding the brackets using the distributive property to obtain,

$( a - b)(a + b) = a(a + b) - b(a + b)$

$( a - b)(a + b) = {a}^{2} + ab - ab- {b}^{2}$

This simplifies to

$( a - b)(a + b) = {a}^{2} - {b}^{2}$

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3 years ago

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Anyone know the answer or how to solve this

Readme [11.4K]

Answer:

9 for part b 40 for part a

Step-by-step explanation:

if u do 5 times the numbers it gives u the product so 45 is 9 times 5 and 40 os 8 times 5

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3 years ago

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4. Evaluate the following expression for r= 5.<br> 2(r2 - 8)

inessss [21]

Answer:

The expression is equal to 4

Step-by-step explanation:

Given the expression 2(r2-8) and the equality for the variable r = 5. It is best to substitute this equality into the expression to solve for its corresponding value:

2(r2-8) =

2(2(r)-8),

2(2(5)-8),

2(10-8),

2(2),

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4 years ago

What is the volume of this cone?

Katyanochek1 [597]

There is no image but I would likely be glad to help! :)

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3 years ago

3= g/-4 - 5 solve for g

algol13

Answer:

g= - 27

Step-by-step explanation:

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