What is the standard form of $y= (x – 8)(x + 5)$ ?

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Answer 1 · 2016-01-02T13:59:02

$x^2 - 3x - 40$

Suggestion by Tony B about formatting:
You wrote:
))(x-8)(x+5)
=x(x+5)-8(x+5)

Write as:
$(x-8)(x+5)$
$=x(x+5)-8(x+5)$
'~~~~~~~~~~~~~~~ Your solution ~~~~~~~~~~~~~
))(x-8)(x+5)
=x(x+5) -8(x+5)
$=x^2 +5x -8x -40$
$=x^2-3x -40$

What is the standard form of y= (x – 8)(x + 5) y= (x – 8)(x + 5) ?