pinaliamratlal pinaliamratlal

06-01-2021
Mathematics

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Expand the following:
a) x(x + 6)
b) x(5x - 1)
c) 3x(6x + 5)
d) 4x(2x – 3y)

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SvetlanaM SvetlanaM

06-01-2021

Answer:

a) x(x + 6) = x · x + x · 6 = x² + 6x

b) x(5x - 1) = x · 5x - x · 1 = 5x² - x

c) 3x(6x + 5) = 3x · 6x + 3x · 5 = 18x² + 15x

d) 4x(2x – 3y) = 4x · 2x - 4x · 3y = 8x²-12xy

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