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mrs_skeptik [129]
3 years ago
11

(-10x^2+9)+(8x^2-5x+7) (−10x 2 +9)+(8x 2 −5x+7)

Mathematics
1 answer:
zavuch27 [327]3 years ago
7 0

Answer:

-2x^2-5x+16

Step-by-step explanation:

-10x^2-8x^2-5x+9+7=-2x^2-5x+16

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2/3  /   8/7  flip the second fraction and multiply straight across

2/3  x  7/8   2 x 7 = 14

                   3 x 8 = 24 so you have   14/24  if you need to simplify, since both numerator and denominator are even so divide by 2. Which gives you  7/12

Hope this helps you :) 

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Triss [41]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Is -(3x + 5)^2 a perfect trinomial? Why or why not?
attashe74 [19]

The given equation-(3x + 5)^2 is not a perfect trinomial because it is not obtained through the multiplication of a binomial.

<h3>What is a perfect trinomial?</h3>

A perfect square trinomial is takes the algebraic expression form ax^2 +bx + c, where the square root of the first term and the third term is the equation to the second term.

Given that:

-(3x + 5)^2

Open brackets

= - (9x +30x + 55)

Multiply through by (-)

= -9x^2 - 30x - 55

Therefore, we can conclude that the given equation-(3x + 5)^2 is not a perfect trinomial because it is not obtained through the multiplication of a binomial. i.e. the multiplication of the square root of the first and the third term did not result in the 2nd term.

Learn more about perfect square trinomials here:

brainly.com/question/88561

#SPJ1

8 0
2 years ago
"A parabola has the equation = ^ + − . What are the coordinates of the vertex? (You must solve by factoring)!!!!!" I NEED THE AN
Marina CMI [18]

Answer:

1

Step-by-step explanation:

1

8 0
3 years ago
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