A right angled teiangle has sides of lengths (x+5) cm, (x-3) cm and 9 cm. Calculate the value of x
1 answer:
Answer:
3.95
Step-by-step explanation:
(x + 5)^2 + (x - 3)^2 = 9^2
x^2 + 10x + 25 + x^2 - 6x + 9 = 81
2x^2 + 4x - 47 = 0
x = (-4 ± √392)/4
x ≈ -5.9497, 3.9497 => x = 3.95
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