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3 years ago

Please help me I need it

Mathematics

1 answer:

Kitty [74]3 years ago

3 0

Answer:(x - 1)(7x + 12)

Step-by-step explanation:

Question: (6x² + 5x - 3) + (x² - 9)

⇒(6x² + 5x - 3) + (x² - 9)

⇒6x² + 5x - 3 + x² - 9

rearrange

⇒6x² + x² + 5x - 3 - 9

⇒7x² + 5x - 12

Middle term break

⇒7x² + 12x - 7x - 12

⇒x(7x + 12) - 1(7x + 12)

⇒(x - 1)(7x + 12) Answer

hope that helps...

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Solve the following equation and then graphically: 16x + =14x + 10

cestrela7 [59]

Answer:

Step-by-step explanation:

Simplifying

16x + -14 = 14x + -10

Reorder the terms:

-14 + 16x = 14x + -10

Reorder the terms:

-14 + 16x = -10 + 14x

Solving

-14 + 16x = -10 + 14x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-14x' to each side of the equation.

-14 + 16x + -14x = -10 + 14x + -14x

Combine like terms: 16x + -14x = 2x

-14 + 2x = -10 + 14x + -14x

Combine like terms: 14x + -14x = 0

-14 + 2x = -10 + 0

-14 + 2x = -10

Add '14' to each side of the equation.

-14 + 14 + 2x = -10 + 14

Combine like terms: -14 + 14 = 0

0 + 2x = -10 + 14

2x = -10 + 14

Combine like terms: -10 + 14 = 4

2x = 4

Divide each side by '2'.

x = 2 Simplifying

16x + -14 = 14x + -10

Reorder the terms:

-14 + 16x = 14x + -10

Reorder the terms:

-14 + 16x = -10 + 14x

Solving

-14 + 16x = -10 + 14x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-14x' to each side of the equation.

-14 + 16x + -14x = -10 + 14x + -14x

Combine like terms: 16x + -14x = 2x

-14 + 2x = -10 + 14x + -14x

Combine like terms: 14x + -14x = 0

-14 + 2x = -10 + 0

-14 + 2x = -10

Add '14' to each side of the equation.

-14 + 14 + 2x = -10 + 14

Combine like terms: -14 + 14 = 0

0 + 2x = -10 + 14

2x = -10 + 14

Combine like terms: -10 + 14 = 4

2x = 4

Divide each side by '2'.

x = 2

Simplifying

x = 2

Simplifying

x = 2

7 0

3 years ago

4+3(2r+2s)+3r<br><br> Simplify this expression

Ipatiy [6.2K]

Hello!

First you can distribute the 3

4 + 6r + 6s + 3r

Then you combine like terms

4 + 9r + 6s

The answer is 9r + 6s + 4

Hope this helps!

3 0

3 years ago

Perform the following operations and write the answers in radical form. Part A:√7+√3+√98−√18 Part B:3√5−3√11+2√121−3√90

Sveta_85 [38]

Answer:

$\sqrt{7}+\sqrt{3}+4\sqrt{2}$
$3\sqrt{5}-3\sqrt{11}+22-9\sqrt{10}$

Step-by-step explanation:

Part A ;

$\sqrt{7} +\sqrt{3} +\sqrt{98} -\sqrt{18} \\\\\sqrt{98}=7\sqrt{2}\\\sqrt{18}=3\sqrt{2}\\\\=\sqrt{7}+\sqrt{3}+7\sqrt{2}-3\sqrt{2}\\\\\mathrm{Add\:similar\:elements:}\:7\sqrt{2}-3\sqrt{2}=4\sqrt{2}\\\\=\sqrt{7}+\sqrt{3}+4\sqrt{2}$

Part B ;

$3\sqrt{5} - 3\sqrt{11} + 2\sqrt{121} -3\sqrt{90} \\\\2\sqrt{121}=22\\3\sqrt{90}=9\sqrt{10}\\\\=3\sqrt{5}-3\sqrt{11}+22-9\sqrt{10}$

8 0

4 years ago

I need help please please please

JulsSmile [24]

Answer:

SEE IMAGE FOR SOLUTION

Hope it helps

Have a great day

6 0

3 years ago

1) A store sold 350 bikes last year. This year, the store sold 272 bikes, what is the percent change in the

NeX [460]

Answer:

-22.3% or 22.3% less than the previous year

Step-by-step explanation:

350 - 272 = 78

78/350 = 22.3 to 3 significant figures

5 0

3 years ago

Please help me I need it ​

Please help me I need it