P and Q are centres of circles of radii 9 cm and 2 cm respectively. PQ = 17 cm. R is the centre of the circle of radius X cm which touches the above circle externally. given that angle PRQ is 90 . write an equation in X and solve it
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Answer:
x²+11x+102=0
Step-by-step explanation:
so by solving this, x=6
therefore, r=6.
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