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3 years ago

9

Explain how the distributive property helps us multiply the following polynomials and why and how the final products differ: (a

+ b)^2, (a – b)^2, and (a - b)(a + b).

1 answer:

koban [17]3 years ago

5 0

Answer:

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

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

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

Step-by-step explanation:

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vovangra [49]

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3 years ago

Is 20 a prime or composite number.

STALIN [3.7K]

Answer: It is a composite number since it has more factors than just itself and 1.

Step-by-step explanation:

1x20=20

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6 0

3 years ago

Read 2 more answers

At a bake sale, as student spent $11.00 buying 3 brownies and 5 cookies. His friend spent $3.95 buying 1 brownie and 2 cookies.

riadik2000 [5.3K]

Answer:

$ $$2.25$

Step-by-step explanation:

Let $b =$ the cost of one brownie, $c =$ cost of one cookie

$3b + 5c = 11$

$b+2c = 3.95$

Times $3$ on both sides on the second equation above to get the following:

$3b + 6c = 11.85$

$3b+6c - (3b+5c) = 11.85-11$

$3b+6c-3b-5c = 0.85$

$c = 0.85$

To find the value of $b$ , use substitution:

$b+2c = 3.95$

$b = 3.95-2c$

$= 3.95 - 2\times0.85$

$= 2.25$

$\therefore$ the cost of a brownie is $ $$2.25$

Hope this helps :)

4 0

3 years ago

Solve the equation.<br> 9x=25

lidiya [134]

Answer:

$x = \frac{25}{9}$

Step-by-step explanation:

Divide both sides by 9 to isolate x:

$\frac{9x}{9} = \frac{25}{9} \\x = \frac{25}{9}\\$

Hope this helps!

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3 years ago

PLEASE HELP ASAP!

fomenos

Answer:

The answer could be A

Step-by-step explanation:

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3 years ago