Variable

Find variable P:

PP plus P x P plus P = 160

Correct result:

P =  8

Solution:

10 P+P+P P+P=160 10P+P+PP+P=160  10 P+P+P P+P=160 P2+12P160=0  a=1;b=12;c=160 D=b24ac=12241(160)=784 D>0  P1,2=b±D2a=12±7842 P1,2=12±282 P1,2=6±14 P1=8 P2=20   Factored form of the equation:  (P8)(P+20)=0 P>0 P=P1=8   Verifying Solution:  s=88+8 8+8=160

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