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3 years ago

7

What is 13\15-1\5 and what is the simplified answer

1 answer:

valentinak56 [21]3 years ago

4 0

13/15 - <span>1/5 </span>
<span>common denominator is 15 </span>
<span>Multiply numerator and denominator of 1/5 by 3 = 3/15 </span>
<span>13/15 - 3/15 = 10/15 </span><span>= 2/3

2/3 is your answer.</span>

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<h3>Step to step explanation:</h3>

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$8x^4-7x^3+2-(5x^4-4x^3+3x^2-2x)\\\\8x^4-7x^3+2-5x^4+4x^3-3x^2+2x\\\\3x^4-3x^3-3x^2+2x+2$

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Step-by-step explanation:

We are given that $\alpha$ and $\beta$ are the zeroes of the polynomial $6y^2-7y+2$

$y^2-\frac{7}{6}y+\frac{1}{3}$

We have to find a quadratic polynomial whose zeroes are $1/\alpha$ and $1/\beta$ .

General quadratic equation

$x^2-(sum\;of\;zeroes)x+ product\;of\;zeroes$

We get

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$\frac{1}{\alpha}+\frac{1}{\beta}=\frac{\alpha+\beta}{\alpha \beta}$

$\frac{1}{\alpha}+\frac{1}{\beta}=\frac{7/6}{1/3}$

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Substitute the values

$y^2-(7/2)y+3=0$

$2y^2-7y+6=0$

Hence, the quadratic polynomial whose zeroes are $1/\alpha$ and $1/\beta$ is given by

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