jennyjorgensen jennyjorgensen
  • 15-07-2019
  • Mathematics
contestada

Find the product of (4x + 3y)(4x − 3y). (2 points)

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Аноним Аноним
  • 15-07-2019

(4x+3y)(4x-3y)

Multiply the two brackets together

4x(4x)(4x-3y)(-3y)(4x)(3y)(-3y)

16x^2-12xy+12xy-9y^2

16x^2-9y^2

Answer is 16x^2-9y^2

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Ben
Ben Ben
  • 15-07-2019

[tex]\huge{\boxed{16x^2-9y^2}}[/tex]

Use the FOIL method.

First term in each binomial: [tex]4x*4x=16x^2[/tex]

Outside terms: [tex]4x*-3y=-12xy[/tex]

Inside terms: [tex]3y*4x=12xy[/tex]

Last term in each binomial: [tex]3y*-3y=-9y^2[/tex]

Add these all together. [tex]12xy-12xy+16x^2-9y^2=\boxed{16x^2-9y^2}[/tex]

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