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baherus [9]
3 years ago
11

What is the solution set of the equation x^2-3x-4=6

Mathematics
1 answer:
Oxana [17]3 years ago
4 0

Answer:

x = 5, x = -2

Step-by-step explanation:

x² - 3x - 4 = 6

Subtract: x² - 3x - 10 = 0

Find two numbers to factor: adds up to -3x, product is -10x²: -5x and 2x

Substitute: x² - 5x + 2x - 10 = 0

Factor: (x - 5)(x + 2) = 0

Solutions: x = 5, x = -2

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Answer:

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Step-by-step explanation:

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3 years ago
With a detailed explanation from the internet<br> 1/(x-5)+3/(x+2)=4
irga5000 [103]

Answer:

\boxed{ \sf x=\dfrac{4\pm\sqrt{43}}{2}}

Explanation:

\rightarrow \sf \dfrac{1}{x-5}+\dfrac{3}{x+2}=4

<u>make the denominators same</u>

\rightarrow \sf \dfrac{1(x+2)}{(x-5)(x+2)}+\dfrac{3(x-5)}{(x+2)(x-5)}=4

<u>join the fractions together</u>

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<u>cross multiply</u>

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<u>simplify</u>

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<u>use quadratic formula</u>

\rightarrow \sf x = \dfrac{-\left(-16\right)\pm \sqrt{\left(-16\right)^2-4\cdot \:4\left(-27\right)}}{2\cdot \:4}

<u>simplify the following</u>

\rightarrow \sf x=\dfrac{4\pm\sqrt{43}}{2}

7 0
2 years ago
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Hi, so I think I got this right but do you have to put a negative symbol anywhere or just leave it how it is? number 12 (sorry i
krek1111 [17]

Answer:

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<h2><u><em>Could I please have BRAINLIEST?</em></u></h2>
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yaroslaw [1]

Answer:

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Step-by-step explanation:

All you have to do is count how many cubes there are.

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Two angles in a triangle measure 102 and 67 ( should have tiny circles at the top). What is the measure of the third angle?
Nookie1986 [14]
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A.
3 0
4 years ago
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