Question

Y = -4(x + 6)(x - 8)
How do you write this in standard form?

Answer 1

`y = -4x^2 + 8x + 192`

Explanation:

Hi there!

Standard form:
`y=ax^2+bx+c`

`y = -4(x + 6)(x - 8)`

Use the distributive property to multiply (x+6) and (x-8)

`y = -4(x(x - 8) + 6(x - 8))\\y = -4(x^2 - 8x + 6x - 48)\\y = -4(x^2 - 2x - 48)`

Multiply the parentheses by -4

`y = -4x^2 + 8x + 192`

I hope this helps!