March 29, 2017

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using foil method
x^2 + (x+1)+(x+3)^2 =38 then combine

  • algebra - ,

    (x+3)^2 = x^2 + 6x + 9
    Now substitute that into your equation and combine terms.

    You not require parentheses around x+1 since you are not raising it to a power

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