dmoney4 dmoney4
  • 02-09-2016
  • Mathematics
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i need help with these 2 problems

i need help with these 2 problems class=

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musicotic
musicotic musicotic
  • 02-09-2016
The formula for the area of a rectangle is [tex] b\cdot h[/tex], so given that [tex]h=5x+3, b=3x-4[/tex], the area of the entire rectangle is [tex](3x-4)(5x+3)=15x^2-20x+9x-12=15x^2-11x-12. [/tex]. We now subtract the white part, with area [tex] 2x*4x=8x^2[/tex], so [tex] 15x^2-11x-12-8x^2=7x^2-11x-12[/tex]
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