marnbir9cadut5henduk marnbir9cadut5henduk
  • 14-11-2016
  • Mathematics
contestada

Simpify the expression 7-x (-5x)-10 4x

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candystarlover4
candystarlover4 candystarlover4
  • 14-11-2016
Step 1. Gather like terms

[tex]7-(-5x*x)-10,4x [/tex]

Step 2. 
Use Product Rule: [tex] x^{a} x^{b} = x^{a+b} [/tex]

[tex]7-(5 x^{2} )-10,4x[/tex]

Step 3. Simplify brackets

[tex]7+5 x^{2} -10,4x[/tex]

Step 4. Simplify [tex]7+5 x^{2} -10[/tex] to [tex] 5x^{2} -3[/tex]

[tex]5 x^{2} -3,4x[/tex]

7+5{x}^{2}-10
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