(x+5) (x+9)=20 what is the standard form and the value of a, b and c?
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(x+5) (x+9)=20 what is the standard form and the value of a, b and c?
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Answer:
(x+5)(x+9)=20
transpose 20 in the left side of the equation,we will have;(x+5)(x+9)-20=0
multiplying:
x²+9x+5x+45-20
x²+14x+25the standard form
value of a=1,b=14 and c=25