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2 years ago

The factors of x2 + x – 12

Mathematics

1 answer:

amm18122 years ago

6 0

Answer:

$x^2+x-12=(x-3)(x+4)$

Step-by-step explanation:

To factor $x^2+x-12$

Find factors of -12 that have a sum of 1.

Factors of -12: 1 and -12, 2 and -6, 3 and -4, 3 and -3, 6 and -2, 12 and -1

Factors of -12 that have a sum of 1: -3 and 4

Therefore, $x^2+x-12=x^2+4x-3x-12$

Factor: $x(x+4) -3(x+4)$

Factor out common term $(x+4)$ : $(x-3)(x+4)$

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blagie [28]

Answer:

360 km^2

Step-by-step explanation:

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2 years ago

Which of the following trigonometric ratios are correct?

den301095 [7]

Hi there! In this problem, you should have the knowledge of three basic Trigonometric Ratio.

sinA = opposite/hypotenuse
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Now that we know three basic ratio. Let's check each choices!

sin50° = d/c

This choice is wrong because we focus on the 50° angle. When we focus on 50°, sin50° should be d/x and not d/c.

sin50° = c/x

This choice is also wrong because in ratio, it's cos50° that adjacent/hypotenuse.

tan50° = d/c

This choice is correct! As ratio states, tanA = opposite/adjacent.

tan50° = x/c

This choice is wrong. x/c is a reciprocal of cosine which is 1/cos. We call the reciprocal of cosine as secant or sec in short.

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This choice is wrong as x/d is a reciprocal of sine which is 1/sin. We call the reciprocal of sine as cosecant or cosec/csc in short.

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Answer

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Questions can be asked through comment.

Furthermore, tan also has its reciprocal form itself which is called cotangent also known as cot in short.

Hope this helps, and Happy Learning! :)

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3 years ago

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natita [175]

Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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Solnce55 [7]

Answer:

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Step-by-step explanation:

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3 years ago

The factors of x2 + x – 12​

The factors of x2 + x – 12