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joja [24]
3 years ago
15

Which expression is equivalent to (4−3)−6? 418 43 4−18 4−9

Mathematics
2 answers:
Assoli18 [71]3 years ago
8 0

(4-3)-6 = 1-6 = -5

4-9 = -5

The answer is 4-9

GarryVolchara [31]3 years ago
8 0
(4-3)-6=(1)-6=-5
4-9=-5
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16x^2 - 49 when factored is ?
vaieri [72.5K]

Answer:

(4x-7)(4x+7)

Step-by-step explanation:

This is called the Difference of Two Squares (DOTS).

These are the conditions that must be met for DOTS to work:

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•Each term must be a perfect square.

First, you have to find 2 square numbers that times together to make 16.

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As we want 16x², you just need to make the 4 become 4x:

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Then, find 2 squares that times together to make 49.

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You can put the two squares into a bracket with the x variable first, then the number:

(4x-7)(4x+7)

In the brackets, you always put the negative sign in the first one and then the plus sign in the second one.

You can double check your answer by expanding it back out again using FOIL:

F-First

O-Outer

I-Inner

L-Last

Times the First two in the two brackets:

4x times 4x equals 16x²

Times the Outer two:

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Times the Inner two:

-7 times 4x equals -28x

Times the Last two:

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Form an equation:

16x²+28x-28x-49

The 28x cancel out to leave:

16x²-49

Hope this helps :)

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Step-by-step explanation:

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3 years ago
Solve: x + 1 &lt; 5<br>Me confused and need help ​
natita [175]

Answer: x < 4

Step-by-step explanation: You are trying to isolate the variable, x, so you have to subtract 1 on both sides of the inequality. Then, you are left with x < 4.

4 0
3 years ago
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