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4 years ago

Please answer correctly !!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!

Mathematics

1 answer:

Alenkasestr [34]4 years ago

5 0

Answer:

first box: -14 $(x+7)^2-49=0\\(x+7)^2=49\\(x+7)=\sqrt{49} \\(x+7)=+/-7\\x=-7+/-7\\x=-7+7\,\,and\,\,-7-7\\x=0\,\,and\,\,-14$

second box: zero

Step-by-step explanation:

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Factoring by grouping 1) x² + x² – 3x – 3 = 0

N76 [4]

The value of x is x $\geq -0.686$ and x $\leq 2.186$

Step-by-step explanation:

Factorisation is not possible in this case since the 2 pairs available will not be giving the same outcome as required in factorisation.

This is a quadratic equation

x² + x² – 3x – 3 = 0

2x² - 3x - 3 = 0

Quadratic formula:

$\frac{-b±\sqrt{b^{2} }-4ac }{2a}$

a=2

b= -3

x= -3

$\frac{-(-3)+\sqrt{-3^{2} }-4(2)(-3) }{2(2)}$

= $\frac{3+\sqrt{33} }{4}$

= 2.186

$\frac{-(-3)-\sqrt{-3^{2} }-4(2)(-3) }{2(2)}$

= $\frac{3-\sqrt{33} }{4}$

= -0.686

Therefore, the value of x is,

x $\geq -0.686$ and x $\leq 2.186$

Keyword: Factoring, Quadratic

Learn more about quadratic/factoring at

#LearnwithBrainly

4 0

4 years ago

Solve for x. 5x - [3x + 4(x - 2)] = 9x - [4x + 5x + 10]

Murrr4er [49]

Answer:

all work is shown and pictured

4 0

4 years ago

<img src="https://tex.z-dn.net/?f=%5Cleft%284%2B%5Csqrt%7B6%7D%5Cright%29%5Cleft%2810%2B%5Csqrt%7B6%7D%5Cright%29" id="TexFormul

Zepler [3.9K]

Answer:

$46 + 14\sqrt6$

Step-by-step explanation:

Hello!

Multiply by distributing:

$(4 + \sqrt6)(10 + \sqrt 6)$

$4(10 + \sqrt 6) + \sqrt6 (10 + \sqrt6)$ Distribute 4 + √6

$40 + 4\sqrt6 + 10\sqrt6 + \sqrt {36$ Multiply

$40 + 14\sqrt6 + 6\\$ Simplify

$46 + 14\sqrt6$ Simplify

The final answer is 46 + 14√6

6 0

3 years ago

Greatest to least π^2/4, √4, 2.93

NemiM [27]

Answer:

2.93, √4, π^2/4

Hope this helps

-Amelia

4 0

3 years ago

Tina and Zion earn $38 per week for delivering newspapers. Tina worked for x weeks and earned an additional total bonus of $15.

sergejj [24]

Answer:

it would be (38x+15)+38y

Step-by-step explanation:

x=number of weeks

38 times x=38x

53x=53 weeks

bonus of 15=38x+15

3 0

3 years ago