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What’s the answer??????#9

What’s the answer??????#9-example-1
User Sylphe
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2 Answers

4 votes

Answer:

A)

Step-by-step explanation:Quadratics

User William Jockusch
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5 votes


\huge \tt \color{cyan}{➢}\color{pink}{A}\color{blue}{n}\color{red}{s}\color{green}{w}\color{grey}{e}\color{purple}{r }\color{cyan}{➢}


\large\underline{ \boxed{ \sf{✰\:Important\: point's }}}

  • a polynomial equation of the second degree is said to be as quadratic equation.
  • quadratic:-a function, of the form y=ax²+bx+c.
  • Standard form of quadratic equation is ax²- bx+c=0
  • where a≠0


\rule{70mm}{2.9pt}


\large\underline{ \boxed{ \sf{✰\: Let's\: solve }}}


\purple{ \sf{⇒Given \:function}}

⇒ y = -2(x-5)²-4

  • now 1st we have to solve (x-5)² by using algebraic identify (a-b)²= a²+b²-2ab here a=x nd b = -5
  1. (x-5)²
  2. x²-10x+25
  • Now

⇒y = -2(x²-10x+25)-4

  • distribution of 2 with bracket

⇒ y= -2x²+20x-50-4

⇒ y= -2x²+20x-54

Hence option A (-2x²+20x-54) is right ans.....


\rule{70mm}{2.9pt}


\red{ \underline{\underline{ \boxed{ \tt{✰ \: Option \: A \: ✓}}}}}

Hope it helps !

User Spats
by
5.4k points