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3 years ago

Find the solutions to the equation below.

Mathematics

1 answer:

dybincka [34]3 years ago

5 0

Step-by-step explanation:

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)2a-b±b2-4(ac)2a

Substitute the values a=9a=9, b=0b=0, and c=−81c=-81 into the quadratic formula and solve for xx.

x=±3x=±3

The final answer is the combination of both solutions.

x=3,−3x=3,-3

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Step-by-step explanation:

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Step-by-step explanation:

All you need to do to find the discount price (sale price) is multiply the price of the item by the decimal form of the percentage.

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3 years ago

a textbook has a length of 6 inches, a height of y inches, and a width of x inches. if the length of the diagonal of the front c

Varvara68 [4.7K]

Answer:

Part 1) The value of x is $2\sqrt{7}\ in$

Part 2) The value of y is $\sqrt{21}\ in$

Step-by-step explanation:

Part 1

Find the value of x

Applying Pythagoras Theorem

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3 years ago

What is the completely factored form of this polynomial? 2x5 + 12x3 − 54x

Cloud [144]

Answer:

$2x(x^2-3)(x^2+9)$

Step-by-step explanation:

Given polynomial:

$2x^5+12x^3-54x$

Factor out the common term $2x$ :

$\implies 2x(x^4+6x^2-27)$

To factor the trinomial $x^4+6x^2-27$ :

$\textsf{Let }u=x^2 \implies u^2+6u-27$

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Rewrite the middle term as the sum of these two numbers:

$\implies u^2+9u-3u-27$

Factorize the first two terms and the last two terms separately:

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Factor out the common term (u + 9):

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Substitute back $u=x^2$ :

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Therefore, the factored form of the given polynomial is:

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3 years ago

Read 2 more answers