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3 years ago

Subtract these polynomials. (3x^2+6x+7) - (6x^2-5x-7)

Mathematics

1 answer:

mario62 [17]3 years ago

7 0

Answer:

3x²-11x-14=0

Step-by-step explanation:

Given equation is : (3x²+6x+7)-(6x²-5x-7)

Putting the equation equals to zero making it in the form of polynomial equation (3x²+6x+7)-(6x²-5x-7)=0

Opening the bracket of the equation, the negative sign outside the bracket changes the sign of the values after opening the bracket.

3x²+6x+7-6x²+5x+7=0

Solving this by subtracting the values of same type i.e subtracting the component of x having the same power.

3x²-6x²+6x+5x+7+7=0

-3x²+11x+14=0 OR 3x²-11x-14=0

So, on subtracting the above equation the quadratic equation is obtained 3x²-11x-14=0

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Answer:

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3 years ago

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Oliga [24]

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3 years ago

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kipiarov [429]

Answer:

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Step-by-step explanation:

all together the total is 38.32

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hope it helps!

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3 years ago

Read 2 more answers

Tell weather the measurements can be the side lengths of a triangle. If so, classify the triangle as acute, obtuse, or right. 15

enyata [817]

Hi there!

Let's use the pythagorean theorem for both sets of values.

WORK:
${15}^{2} + {18}^{2} = {20}^{2}$
$225 + 324 = 400$
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${7}^{2} + {8}^{2} = {11}^{2}$
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The second set of values is an OBTUSE triangle.

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3 years ago

A boat is 122 meters from the base of a lighthouse. The lighthouse is 34 meters tall. The angle formed with the lighthouse and s

mojhsa [17]

Answer:

about 16°

Step-by-step explanation:

Make sure your calculator is in degree mode.

Drawing the right triangle, we see that the shorter leg is 34 meters, and the longer leg is 122 meters. So the angle of elevation is:

$\tan( \alpha ) = \frac{34}{122}$