Question
Find ‘x’ if (x³+3x)/(3x²+1) =
189/61Solution
Applying componendo and dividendo, (x³+3x+3x²+1)/(x³+3x-3x²-1) = (189+61)/(189-61)=250/128 ⇒ ((x+1)³)/((x-1)³) = 125/64 ⇒ (x+1)/(x-1) = 5/4 ⇒ x/1 = (5+4)/(5-4) ⇒ x = 9
More Algebra Questions
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
(24.98)2 = ?2 + (14.99)2
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
9.95% of 1299.99 + 19.95 × 17.05 - 299.99 = ?
6106.11 ÷ √? × 55.9 = 3976.21
79.79% of 299.87 - 54.67% of (39.982 - 9.822 ) = ? - 19.92 × 199.98
? % of 759.96 + 932.99 = 1237.01
8.15 of 124.95 ÷ 40.13 + 249.84 X 14.18 - √325 X 149.87 = ? X 10.85
– (8.002)³ + (30.001)² - (4.01)⁴ =?
24.98% of 1682 × (18.2659 ÷ 9.04965)(–4) = ?
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