Help me plz with this problem

Mathematics

1 answer:

inysia [295]3 years ago

8 0

Answer:

refer to this attachment

kamsahamnida

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Combine the like terms in this expression: –3x + 2xy + 4y – xy + 2x – 11y A. 2xy + 15 B. –7xy C. –X+XY–7y D. 23X + y

s344n2d4d5 [400]

Answer:

The correct option is C) –x + xy – 7y.

Step-by-step explanation:

Consider the provided expression.

Rearrange the expression so, that like terms comes together.

–3x + 2x + 2xy – xy + 4y – 11y

Now, add the like terms as shown below:

x(–3 + 2) + xy(2 – 1) + y(4 – 11)

Now, perform the operation inside the parentheses.

x(–1) + xy(1) + y(–7)

Open the parentheses.

–x + xy –7y

Now, compare with the provided options.

By comparison it can be concluded that the correct option is C).

Hence, the correct option is C) –x + xy – 7y.

7 0

4 years ago

So, I really need help with functional notation...If anyone could help me solve these problems, I'd be extremely grateful!!

Law Incorporation [45]

$g(x)=\sqrt{2x-1}$
$g(1)=\sqrt{2(1)-1}=\sqrt{2-1}=\sqrt{1}=1$
$g(0)=\sqrt{2(0)-1}=\sqrt{0-1}=\sqrt{-1}=i$
$g(5)=\sqrt{2(5)-1}=\sqrt{10-1}=\sqrt{9}=3$
$g(-4)=\sqrt{2(-4)-1}=\sqrt{-8-1}=\sqrt{-7}=i\sqrt{7}$

$f(x)=x^{2}-3x+1$
$f(-3)=-3^{2}-3(-3)+1=9-(-9)+1=19$
$f(0)=0^{2}-3(0)+1=1$
$f(1)=1^{2}-3(1)+1=-1$

$h(x)=3x-1$
$h(2)=3(2)-1=5$