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3 years ago

Cncncncncncncncncncn

Mathematics

1 answer:

anzhelika [568]3 years ago

6 0

Answer:

Step-by-step explanation:

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What is the solution of x^2+x-6/x-7<0 PLEASE HELP ME :( (it’s not the 2nd one i already tried it)

blsea [12.9K]

Answer:

the first one $\:x\le \:-3\quad \mathrm{or}\quad \:2\le \:x$

Step-by-step explanation:

Factor $x^2+x-6$ :

Break the expression into groups

$\left(x^2-2x\right)+\left(3x-6\right)$

$\mathrm{Factor\:out\:}x\mathrm{\:from\:}x^2-2x\mathrm{:\quad}$

$x\left(x-2\right)$

$\mathrm{Factor\:out\:}3\mathrm{\:from\:}3x-6\mathrm{:\quad}$

$3\left(x-2\right)$

$x\left(x-2\right)+3\left(x-2\right)$

$\mathrm{Factor\:out\:common\:term\:}x-2$

$\left(x-2\right)\left(x+3\right)$

$\frac{\left(x-2\right)\left(x+3\right)}{x-7}\\$

$\frac{\left(x-2\right)\left(x+3\right)}{x-7}\le \:0$

$\mathrm{Find\:the\:signs\:of\:the\:factors\:of\:}\frac{\left(x-2\right)\left(x+3\right)}{x-7}$

$\mathrm{Identify\:the\:intervals\:that\:satisfy\:the\:required\:condition:}\:\le \:\:0$

$x$

Merge Overlapping Intervals

$x\le \:-3\quad \mathrm{or}\quad \:2\le \:x$

6 0

3 years ago

Find f(-2) if f(x)=x^4+2x^2-1

frutty [35]

Answer:

Step-by-step explanation:

f(x)=x^4+2x^2-1

Let x = -2

f(-2) = (-2)^4 +2(-2)^2 -1

=16 +2*4-1

=16+8-1

24-1

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4 years ago

I need help please. Solve the inequality. 3/4b>-9/8

labwork [276]

3/4b>-9/8
b > (-9/8) (4/3)
b > - 3/2

hope it helps

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3 years ago

Who ever is going to answer now i will give them a brainliest

Alika [10]

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5 pencils / 9 dollars

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5 0

4 years ago

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5.) -6x – 29 = 5x - 7

Archy [21]

Answer:

x= -2

Step-by-step explanation:

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3 years ago

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