3 years ago

What side lengths should be used to model a rectangle with an area of x2 + 3x – 10 square units?

2 answers:

7 0

( x + 5 ) and ( x – 2 )

You can factor the above binomial and solve for zero. You'll have x^2 + 5x – 2x – 10, which simplifies to your original x^2 + 3x – 10

irina [24]3 years ago

5 0

your answer on e2020 would be B

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2 years ago

Please! Solve f(x)-g(x) if f(x)=1/2x^4 - x^2 and g(x)= 3/4x^4 +3x^3 - x^2

igomit [66]

Answer:

$f(x)-g(x)=\frac{-1}{4}x^{4}-3x^{3}$

Step-by-step explanation:

This is a subtraction between polynomials, since both functions are polynomials, hence, to solve the problem with need to perform the subtraction, by coefficients.

$f(x)= \frac{1}{2}x^{4}+0x^{3}-x^{2}\\\\g(x)=\frac{3}{4}x^{4}+3x^{3}-x^{2}$

By performing the subtraction, we have:

$f(x)-g(x)=\frac{-1}{4}x^{4}-3x^{3}$

6 0

3 years ago

How can you solve for x and y?

galina1969 [7]

ah, those are systems you want one variable to cancel out. I would time the bottom equation by -1 so x cancels then u solve for y. then u plug all back in to solve for x.

7 0

3 years ago

4x-2= -14 what value of x makes 4x-2= -14 true?

ad-work [718]

-6

4 x (-6) - 2

-16 - 2

=-14

6 0

3 years ago

Read 2 more answers

Peter is 8 years younger than Alex. In 9 years time, the sum of their ages will be 76 . How old is Alex now?