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frosja888 [35]
4 years ago
7

The expression 2x(5x - 1) +(3x2 - 7x - 2) is simplified into the form ax 2+ bx + c.

Mathematics
1 answer:
Yanka [14]4 years ago
7 0

Step-by-step explanation:

2x (5x - 1) + (3x^2 - 7x - 2)

= 10x^2 - 2x + 3x^2 - 7x - 2

= 13x^2 - 9x - 2

a = 13

b = -9

c = 2

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I think it’s the answer is 0.5
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Factor x^4 + xy^3 + x^3 + y^3. Hint, first factor a monomial. Please explain why!!!
almond37 [142]

Pull an x from the first two terms

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Simplify √(x^2-10x+25) if -5≤x<5
romanna [79]

\qquad\qquad\huge\underline{{\sf Answer}}

Let's simplify ~

\qquad \sf  \dashrightarrow \: \sqrt{ {x}^{2} - 10x + 25 }

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\qquad \sf  \dashrightarrow \: \sqrt{  {x}^{} (x- 5) - 5(x    - 5)  }

\qquad \sf  \dashrightarrow \: \sqrt{   (x- 5) (x    - 5)  }

\qquad \sf  \dashrightarrow \: \sqrt{   (x- 5)  {}^{2}  }

\qquad \sf  \dashrightarrow \: (x- 5)

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\qquad \sf  \dashrightarrow \: - 5 \leqslant x \leqslant 5

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if value of x is taken as 5

\qquad \sf  \dashrightarrow \:5 - 5

\qquad \sf  \dashrightarrow \:0

So, the possible values of the required expression lies between ~

\qquad \sf  \dashrightarrow \: - 10 \leqslant  \sqrt{ {x}^{2} - 10x + 25 }  < 0

I hope you understood the whole procedure. let me know if you have any doubts in given steps ~

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Hope this helped :)
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