3 years ago

1 − yz + 2yz − 2y2z2

Mathematics

1 answer:

photoshop1234 [79]3 years ago

4 0

Answer:

1-7yz

Step-by-step explanation:

1-yz+2yz-2y2z2

First Calculate the product (-2y2z2)

1-yz+2yz-8yz

Then calculate the value of the expression

1-7yz :)

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tamaranim1 [39]

Answer:

(3, 0) and (5, 0)

Step-by-step explanation:

we have

$y=x^{2}-8x+15$

we know that

The x-intercepts are the values of x when the value of y is equal to zero

For y=0

$x^{2}-8x+15=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

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in this problem we have

$x^{2}-8x+15=0$

$a=1\\b=-8\\c=15$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(1)(15)}} {2(1)}$

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$x=\frac{8+2} {2}=5$

$x=\frac{8-2} {2}=3$

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therefore

The x-intercepts are (3,0) and (5,0)

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3 years ago

How do you solve 6) n2+7n+15=5 by factoring?

charle [14.2K]

First, you need to set the equation equal to zero:

n^2 + 7n + 10 = 0

Now we factor. We need to find two numbers that add up to 7 and multiply to 10.

2 + 5 = 7
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Now, we just need to write this as a polynomial:

(n + 2) (n + 5)
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Hope this helps!

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Answer:

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Step-by-step explanation:

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The missing length is 3.2 km

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