in a triangle pqr if length PQ is in bracket (3x - 1) ,l (QR) is 15 x and l(PR) is in bracket 15 X + 1 then for which value of x will triangle pqr be a right angle triangle
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now you can get one quadri equation then you found the value of x
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225x square +1+30x=9xsquare +1 -6x + 225x square
9x square +30x+6x=0
9x square +36x =0
sorry
9x square - 36x = 0
x(9x-36)=0
9x=36
x=36/9
x=4
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