The side of a right angled triangle are x-1 cm ,3x cm and 3x+1 cm find x
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Answer:
the value of 'x' = 8 cm
Step-by-step explanation:
(3x+1 )² = (3x)² + ( x-1 )²
9x ²+ 6x +1 = 9x ²+ x² - 2x + 1
x² - 8x = 0
x(x-8 )=0
x- 8 = 0
x = 8 cm
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