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Start learning 50% faster. Sign in now27x3 + y3 = (3x + y) (9x2 + y2 – 3xy) = use (a + b)2 = a2 + b2 + 2ab = (3x + y)2 = ax2 + y2 + 6xy = (3x + y)2 = 37 + 6 × 2 = 49 = 3x + y = 7 = 27x3 + y3 = 7 × (37 – 3 × 2) = 27x3 + y3 = 7 × 31 = 217
If '+' means '-' , '-' means 'x' , 'x' means '÷' , '÷' means '+' , then what will be the value of ' 500 x 50 - 20 ÷ 50 + 40 ' = ?
...√(2x - 3) + √(2x + 3) = 3 + √3, then value of x is.
A farmer has some chickens and some cows. Find out the total number of chickens if the total number of heads is 50 and the total number of feet is 160.<...
Find the sum of all the possible values of 'a' such that '9a5784' is always divisible by 3.
A man complete a journey in 15 hours. He travels first half of the journey at the rate of 6 km/hr and second half at the rate of 4 km/hr. Find the total...
'A', 'B', and 'C' started a business with initial investments of Rs. 5,000, Rs. 8,000, and Rs. 9,000, respectively. The investment durations were 8 mont...
Sanjay earns Rs. 40,000 per month. He spends 20% of his income on conveyance. From the remaining amount, he allocates 25% for groceries. How much does h...
If + means divide, × means -, ÷ means multiply and – means plus, then find the value of 9 + 3 ÷ 4 - 8 × 2
Train 'A' takes 19 seconds to cross a pole and 18.75 seconds to cross train 'B', which is 440 metre long and moving at the speed of 24 m/s towards train...
