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yaroslaw [1]
3 years ago
7

If a positive number is subtracted from twice its square the result is 28. Find the number.

Mathematics
1 answer:
nordsb [41]3 years ago
6 0

Answer:

xsquared-2x=28

Step-by-step explanation:

Just work the equation now. At the end to cancel the squared c just find the square root of both sides of the equal sign.

Hope this helps :) Have a great day!!!!

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Which binomial is a factor of 8x^2y^3-18y
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Answer:

Please check the explanation.

Step-by-step explanation:

Given the expression

8x^2y^3-18y

Apply exponent rule:   a^{b+c}=a^ba^c

8x^2y^3-18y=8yy^2-18y    ∵ x^2y^3=yy^2

                    =4\cdot \:2yy^2+9\cdot \:2y

Factor out common term 2y

                    =2y\left(4x^2y^2-9\right)

We know that the Binomial is an expression that consists of two terms. Thus,

(4x²y²- 9) represents the binomial factor of 8x^2y^3-18y

We can further simplify by Factoring 4x²y² - 9:  (2xy + 3) (2xy - 3)

                      =2y\left(2xy+3\right)\left(2xy-3\right)

Here:

(2xy + 3) and (2xy -3) are the binomial factors of 8x^2y^3-18y as each of them consists of two terms.

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