ellie6341
ellie6341 ellie6341
  • 11-12-2019
  • Mathematics
contestada

Expand and simplify : A) (x+7)(x+10). B) (X-3) (X-9)

Respuesta :

SchoolyPrep
SchoolyPrep SchoolyPrep
  • 11-12-2019

Answer:

Step-by-step explanation:

A) Using the foil method and distribution, you should get x²+10x+7x+70 from (X×X)+(X×10)+(X×7)+(7×10). When you combine these like terms, you get x²+17x+70.

B) Using the same ideology from part A, when you multiply x-3 into x-9. you should get x²-9x-3x+27. Simplifying this will give you x²-12x+27.

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