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chubhunter [2.5K]
3 years ago
9

Use the binomial squares pattern to multiply (7c²+6)²

Mathematics
1 answer:
SashulF [63]3 years ago
6 0

The solution is 49 c^{4}+84 c^{2}+36

Explanation:

The expression is \left(7 c^{2}+6\right)^{2}

The square of a binomial is always a trinomial.

To determine the square of a binomial we shall use the formula.

The formula to find the square of a binomial is

(a+b)^{2}=a^{2}+2 a b+b^{2}

Let us use this formula to multiply the expression \left(7 c^{2}+6\right)^{2}

Here a=7c^{2} and b=6

Substituting the values in the formula, we get,

\left(7 c^{2}+6\right)^{2}=\left(7 c^{2}\right)^{2}+2 \cdot 7 c^{2} \cdot 6+6^{2}

Squaring each term, we have,

\left(7 c^{2}+6\right)^{2}=49 c^{4}+2\cdot 7 c^{2} \cdot 6+36

Multiplying the product of two terms, we get,

\left(7 c^{2}+6\right)^{2}=49 c^{4}+84c^{2}+36

Thus, the solution is 49 c^{4}+84 c^{2}+36

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In a normal bell shaped curve, approximately which percentage of scores fall within 3 standard deviation (-3 to +3) or blank (34
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Let x represent the scores. With mean and standard deviation given,

The Empirical rule states that

1) About 68% of the x values lie between 1 standard deviation below and above the mean

2) About 95% of the x values lie between 2 standard deviation below and above the mean

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If we consider this rule, then the percentage of scores that fall within 3 standard deviation (-3 to +3) is 99% because this is closer to 99.7%

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In golf, a score of 0 is called even par. A score of 2 under par is written as -2. A score of 4 over par is written as +4 or 4.
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3 years ago
Perimeter of a rectangle is 15x+17y if the length is 7/2x+7y then find the width of the rectangle
bogdanovich [222]

The perimeter of a rectangle is given by the formula,


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and


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15x+17y=2(\frac{7}{2}x+7y)+2w



15x+17y=7x+14y+2w




We now group the x and y terms on the Left Hand Side of the equation to get.


15x-7x+17y-14y=2w




8x+7y=2w



We now divide through by 2 to get,



4x+\frac{7}{2}y=w



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Step-by-step explanation:

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