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3 years ago

Help me solve this problem please

Mathematics

2 answers:

fomenos3 years ago

5 0

Answer:

Step-by-step explanation:

y = - 5

y^2 = (-5)^2

y^2 = 25

z = - 3

z^2 = (-3)^2

z^2 = 9

y^2 - z^2 = 25 - 9 = 16

Orlov [11]3 years ago

3 0

Answer:

C. 16

Step-by-step explanation:

y^2-z^2

(-5)^2-(-3)^2

25-9

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2 years ago

What is the simplest form of this binomial expression?<br><br> a4 − b4

UkoKoshka [18]

Answer:

$a^{4}-b^{4}=(a^{2}+b^{2})(a^{2}-b^{2})$

Step-by-step explanation:

The given expression is

$a^{4}-b^{4}$

This expression is the difference of two perfect squares, and their square roots are

$\sqrt{a^{4}} =a^{2}\\ \sqrt{b^{4}} =b^{2}$

Now, the difference of two perfect squares can be factored as

$x^{2} -y^{2}=(x+y)(x-y)$

So, if we apply this rule, the result would be

$a^{4}-b^{4}=(a^{2}+b^{2})(a^{2}-b^{2})$

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3 years ago

Angel is trying to put together a grab bag for her after-school program. She can choose from 4 different types of chocolate and

Naddik [55]

Answer: 20

Step-by-step explanation:

Given : Angel can choose from 4 different types of chocolate and 5 different flavors of gum.

By the fundamental counting principle , the total number of outcomes is the product of the number of outcomes for each event.

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3 years ago

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4 years ago

Read 2 more answers

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goldfiish [28.3K]

Answer:

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Step-by-step explanation:

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Assuming this is the intended expression, then:

$\frac{ \sqrt{x \times } \sqrt{x + 1} + 2}{ \sqrt{x} }$

We then simplify by collecting LCM to obtain:

$\frac{ \sqrt{ {x}^{2} + x} + 2}{ \sqrt{x} }$

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3 years ago