What is the standard form of y=5(x-3)^2+3?

2 Answers
Nov 17, 2015

Standard form -> ax^2+bx+c
If you meant to ask: 'What is this equation when presented in standard form'? Then you have -> y=5x^2-6x+12

Explanation:

The standard form is y=ax^2+bx+c

However, if you wish to present this equation in standard form we have:

y= 5(x^2-6x+9) +3
y=5x^2-6x+12

Nov 17, 2015

5x^2−30x+48

Explanation:

  • Expand (x-3)^2 in the equation:

5(x−3)(x-3)+3

  • Distribute the 5 to the first parenthesis:

5(x-3
= (5 * x)+(5*-3)
= 5x-15

So now you have 5x−15(x-3)+3.

  • Now distribute the 5x & -15 to the next parenthesis:

5x−15(x-3)
= (5x*x)+(5x*-3)+(-15*x)+(-15*-3)
=5x^2-15x-15x+45
=5x^2-30x+45

So now you have 5x^2-30x+45+3.

  • Finally, add the constant (+3):

45+3 = 48

  • Final Answer:

5x^2-30x+48