2 years ago

Q =3x2+5x-2 R = 2 – x2 S = 2x + 5 Find Q – [R + S] Show all of the steps.

1 answer:

5 0

$Q=3x^2+5x-2\\R=2-x^2\\S=2x+5\\\\Q-[R+S]=(3x^2+5x-2)-[(2-x^2)+(2x+5)]\\\\=(3x^2+5x-2)-(2-x^2+2x+5)\\\\=(3x^2+5x-2)-[-x^2+2x+(2+5)]\\\\=(3x^2+5x-2)-(-x^2+2x+7)\\\\=3x^2+5x-2-(-x^2)-2x-7\\\\=3x^2+5x-2+x^2-2x-7\\\\=(3x^2+x^2)+(5x-2x)+(-2-7)\\\\=\boxed{4x^2+3x-9}$

You might be interested in

What are the coordinates of the point on the directed line segment from (−8,−6) to (-1, 8) that partitions the segment into a ra

aivan3 [116]

Answer:

(-3, 4)

Step-by-step explanation:

let the point P(x, y)

x = (5/7 × (-1+8)) + (-8)

= (5/7 × 7) -8 = 5-8 = -3

y = (5/7 × (8+6)) + (-6)

= (5/7 × 14) -6 = 10-6 = 4

so, P => (-3 , 4)

3 0

2 years ago

Find the inverse of the function f(x)=5x-6/x+2

Naily [24]

Answer:

$f^{-1}(x)=\dfrac{2x+6}{5-x}$

Step-by-step explanation:

Swap x and y, then solve for y.

$x=\dfrac{5y-6}{y+2}\\\\x(y+2)=5y-6\\\\xy+2x=5y-6\\\\2x+6=5y-xy\\\\y=\dfrac{2x+6}{5-x}\\\\f^{-1}(x)=\dfrac{2x+6}{5-x}$

3 0

2 years ago

Read 2 more answers

Answer PLZZ 50 pointsssss

Yanka [14]

Answers
1.) would be A.) y = 2x + 3
2.) would be graph B) the graph looks a little blurry so it could also be C) just a heads up but I’m almost positive it’s B

6 0

2 years ago

In the diagram, how many angles are alternate exterior angles with angle 16?

scoray [572]

Answer:

two is your answer

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Need help on this question ASAP pleasee and thanks!

ollegr [7]

Answer:

Sorry but I don't know the answer too this question

5 0

1 year ago