how to solve this roots of quadratic equation
X2+18x+81=0
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answer: the roots of quadratic equation are -9,-9
Step-by-step explanation:
x^2+18x+81=0
x^2+(9+9)X+81=0
x^2+9x+9x+81=0
X(X+9)+9(X+9)=0
(X+9)(X+9)=0
X+9=0,X+9=0
X= -9,X= -9
hope it is helpful
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