anonymous
  • anonymous
Factor completely: 40xy^2 - 36x^2y. A. 4xy(9y - 10x) B. 4xy(10y - 9x) C. Prime D. 4xy(10x - 9y)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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campbell_st
  • campbell_st
ok... whats th highest common factor of 40 and 36..? then whats the highest common factor of x and x^2 lastly what is the highest common factor of y^2 and y? these values will be outside the brackets
anonymous
  • anonymous
4,X,Y
campbell_st
  • campbell_st
great so \[4 \times 10 \times x \times y \times y = 40xy\] and \[4 \times - 9 \times x \times x \times y = -36x^2y\] so if 4xy is outside the brackets what do you think is inside the brackets..? for each expanded expression just cross out 4, x and y

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anonymous
  • anonymous
10y-9x?
campbell_st
  • campbell_st
thats correct... so the answer is 4xy(10y - 9x) simple as that

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