Question

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Answer 1

22.(i)(x−1)(x−2)=0

⇒x−1=0 or x−2=0

⇒x=1 or x=2, Number of solutions of equation are finite.

(ii){2,3,5,7,11,...}, This set contains infinte number of elements.

(iii){..,1,3,5,7,...}, This set contains infinite number of elements. 

23.Let Rohan's age be x Therefore Rohan's mom's age is x+26 Now Roahn age after 3 yrs x+3 and his mothers age after three years x+29Now we know (x+3)(x+29) = 360  x²+3x+29x+87 = 360  x²+32x+87=360 

24.Let the point on y axis is P(0,y) which is equidistant from the points A(6,5) and B(-4,3) So, the point P(0,9) is equidistant from the points A(6,5) and B(-4,3).

Answer 2

Answer:

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