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3 years ago

Which of the following expression has the greatest value: -3+-4-(-2),-3-(-4)-(-2),-3+-4-2,-3-(-4)-2

Mathematics

1 answer:

AleksAgata [21]3 years ago

6 0

The third one
U solve from left to right and when two negatives are next to each other it turns to a plus.

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In the expression below, a is an integer. 12^3+ax-20 if 3x+4 is a factor of the expession above, what is the value of a

SVEN [57.7K]

Our function is:

$f(x)=12^3+ax-20$

Now, if $3x+4$ is a factor of $f(x)$ then $x=\frac{-4}{3}$ must satisfy the equation:

So, $f(\frac{-4}{3} )=0$

Putting $x=\frac{-4}{3}$

We get,

$f(\frac{-4}{3} )=12^3+a(\frac{-4}{3} )-20=0$

$12^3+\frac{-4}{3} a-20=0$

$\frac{-4}{3} a=20-12^3=20-1708$

$a=-1708 \times \frac{-3}{4} =1281$

So, the value of 'a' for the given expression is 1281.

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3 years ago

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vitfil [10]

B + (-2) = 0

Here, we need to do the inverse operation, and apply it to BOTH sides of teh equation.

b -2 = 0
+2 +2

b = 2

Now we have our answer, b = 2

Final answer: b = 2

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