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Jet001 [13]
3 years ago
12

Write the expression below in simplest form. 3x^2 + 8x -1+2(x^2 +5x+3) (work shown please!)

Mathematics
2 answers:
tresset_1 [31]3 years ago
5 0

Answer:

5x² + 18x + 5

Step-by-step explanation:

Given

3x² + 8x - 1 + 2(x² + 5x + 3) ← distribute parenthesis

= 3x² + 8x - 1 + 2x² + 10x + 6 ← collect like terms

= 5x² + 18x + 5

Alinara [238K]3 years ago
4 0

Answer:

5x^2+18x+5

Step-by-step explanation:

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Solve for x in the equation X2-8x+41 = 0 -
djverab [1.8K]

Answer:

The value of x fro the given equation is ( 4 + 2 i ) , ( 4 - 2 i )

I.e option D  

Step-by-step explanation:

Given equation as :

x² - 8 x + 41 = 0

For quadratic equation  ax² + b x + c = 0

The value of x = \frac{-b\pm \sqrt{b^{2}-4\times a\times c}}{2\times a}

∴ For equation x² - 8 x + 41 = 0

Or,                x = \frac{8\pm \sqrt{-8^{2}-4\times 1\times 41}}{2\times 1}

Or,                x = \frac{8\pm \sqrt{-100}}{2}

Or,                x = \frac{8\pm 10i}{2}

∴                  x = ( 4 + 2 i ) , ( 4 - 2 i )

Hence The value of x fro the given equation is ( 4 + 2 i ) , ( 4 - 2 i )

I.e option D     Answer

7 0
4 years ago
Please help!!!!!!!!!!
horsena [70]
The correct answer is B
6 0
3 years ago
Please help!!!!!!!!!
nadya68 [22]

Step-by-step explanation:

0.002

ones is 0

tenths is 0

hundreths is 0

thousandths is 2

7 0
3 years ago
The perimeter of a square is 56cm. What is the approximate length of its diagonal?
gogolik [260]

To find the answer, we can use the Pythagoras theorem, where:

\sqrt{a^{2}+ b^{2} } =c^{2}

Where a and b is the side length and c is the diagonal.

In this case:

\sqrt{56^{2} +56^{2} } \\ =\sqrt{6272} \\ =79.19596... \\ =79.2(correct to 3 sig. fig.)

Therefore, the answer is 79.2cm

Hope it helps!

6 0
3 years ago
A recipe needs two and one sixth cups of walnuts and eight and one eighth cups of peanuts. How many cups of nuts are needed for
Rudiy27

Answer: You will have one and two sixth cups of nuts in all or 1 2/6 cups.

Step-by-step explanation: 1.) add the first two fractions. 1/6 + 1/6 = 2/6

2.) add the second fractions. 1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8 + 1/8 = 8/8 = 1

3.) add the whole number and fraction. 2/6 + 1 = 1 2/6.

7 0
3 years ago
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