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kakasveta [241]

3 years ago

15

If A=3x2+5x-6and B=-2x2-6x+7then A-B equals

1 answer:

Lesechka [4]3 years ago

6 0

Let's simplify step-by-step.<span><span><span><span>3<span>x^2</span></span>+<span>5x</span></span>−6</span>−<span>(<span><span><span>−<span>2<span>x^2</span></span></span>−<span>6x</span></span>+7</span>)</span></span>Distribute the Negative Sign:<span>=<span><span><span><span>3<span>x^2</span></span>+<span>5x</span></span>−6</span>+<span><span>−1</span><span>(<span><span><span>−<span>2<span>x^2</span></span></span>−<span>6x</span></span>+7</span>)</span></span></span></span><span>=<span><span><span><span><span><span><span>3<span>x^2</span></span>+<span>5x</span></span>+</span>−6</span>+<span><span>−1</span><span>(<span>−<span>2<span>x^2</span></span></span>)</span></span></span>+<span><span>−1</span><span>(<span>−<span>6x</span></span>)</span></span></span>+<span><span>(<span>−1</span>)</span><span>(7)</span></span></span></span><span>=<span><span><span><span><span><span><span><span>3<span>x^2</span></span>+<span>5x</span></span>+</span>−6</span>+<span>2<span>x^2</span></span></span>+<span>6x</span></span>+</span>−7</span></span>Combine Like Terms:<span>=<span><span><span><span><span><span>3<span>x^2</span></span>+<span>5x</span></span>+<span>−6</span></span>+<span>2<span>x^2</span></span></span>+<span>6x</span></span>+<span>−7</span></span></span><span>=<span><span><span>(<span><span>3<span>x^2</span></span>+<span>2<span>x^2</span></span></span>)</span>+<span>(<span><span>5x</span>+<span>6x</span></span>)</span></span>+<span>(<span><span>−6</span>+<span>−7</span></span>)</span></span></span><span>=<span><span><span>5<span>x^2</span></span>+<span>11x</span></span>+<span>−13</span></span></span>Answer:<span>=<span><span><span>5<span>x^2</span></span>+<span>11x</span></span>−<span>13</span></span></span>

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What is the best way to answer this mixed number 7 3/4 + 1 5/6

olga_2 [115]

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Answer:

9 7/12

Step-by-step explanation:

12 is a suitable common denominator.

(7 3/4) + (1 5/6) = (7 9/12) + (1 10/12) = (7+1) +(9/12 +10/12)

= 8 + 19/12 = 9 + 7/12 . . . . . . change 19/12 to 1 7/12

= 9 7/12

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wlad13 [49]

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Find sum or difference.<br><br>1/6 + 3/8<br><br>A. 4/6<br>B. 4/8<br>C. 4/14<br>D. 13/24

Vaselesa [24]

<span>1/6 + 3/8
= 4/24 + 9/24
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Y=x(x−2)^3 identify the zeros and their multiplicities.

lawyer [7]

The zeros of the function are 0 and 2
The multiplicity is the power to which the factors are raised. The multiplicities of the function are 1 and 3.

<h3>Zeros and multiplicities of functions</h3>

Given the function $y=x(x-2)^3$

The zeros of the function is at the point where y = 0

$x(x-2)^3 =0\\x = 0\\(x-2)^3=0\\x-2=0\\x=2$

Hence the zeros of the function are 0 and 2

The multiplicity is the power to which the factors are raised. The multiplicities of the function are 1 and 3.

Learn more on zeros and multiplicity here: brainly.com/question/11314797

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aivan3 [116]

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Step-by-step explanation:

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