What is the standard form of # y= (5x-9)(3x+4)+(x-3)^2#?

1 Answer
Jim G.
Feb 23, 2016

#16x^2 - 13x - 27 #

Explanation:

Distribute each 'pair' of brackets using FOIL , or any method you have for multiplying brackets.

{(5x - 9 )(3x + 4 )] + [ (x - 3 )(x - 3 ) ]

#=15x^2+20x-27x-36 + x^2-3x-3x+9 #

'collect like terms' , starting with the highest power terms and decreasing.

#= 16x^2 - 13x - 27 #

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