If a + b = 8 and ab = 15, then a3 + b3 is1). 2242). 2443). 1524). 128
Applying formula; (a + b)3 = a3 + b3 + 3ab (a + b)
Join Telegram Group
1. If the measures of the sides of triangle are $(x^{2}- 1)$,$(x^{2}+ 1)$ and 2x cm, then the triangle would be
2. The value of \(\frac{1}{{\left( {9219 - 2131} \right)\left( {2131 - 8761} \right)}} + \;\frac{1}{{\left( {2131 - 8761} \right)\left( {8761 - 9219} \right)}} + \frac{1}{{\left( {8761 - 9219} \right)\left( {9219 - 2131} \right)}}\) is
3. An 800 car parking lot is divided into 3 sections. There are 270 spots in section 1 and 150 more in section 2 than in section 3. How many spots are there in section 2?
4. What is the unit digit of (124744 + 125524 + 127864)?
5. If (X2 + 1/x2) = 6, then find the value of (10x – 10/x)
6. What are the roots of the quadratic equation: x2 + 3x - 154 = 0
7. In the following question, one or two equation(s) is/are given. You have to solve both the equations and find the relation between ‘x’ and ‘y’ and mark correct answer. I. 8x2 + 6x - 5 = 0 II. 12y2 – 22y + 8 = 0
8. In the following question two equations are given. You have to solve these equations and determine relation between x and y. I. x2 + x – 210 = 0 II. y2 – 32y + 252 = 0
9. What is the value of $\frac{(4a^{2} + 8b + 14c + 2)}{2}$ ?
10. If a + b + c = 27, then what is the value of $(a - 7)^{3} + (b - 9)^{3} + (c - 11)^{3} - 3(a - 7)(b - 9)(c - 11)$?
History
Geography
Political Science
Chemistry
Biology
Physics
Enviornmental Science
Economics
Books & Authors
Computer Basics
Financial Awareness
International Organisations
Famous Personalities
Spoting Errors
Sentence Improvement
Fill In the Blanks
Antonyms
Synonyms
Spellings
Idioms and Phrases
Voice (Active/ Passive)
Naration (Direct/ Indirect)
Reading Comprehension
Cloze Test
Mensuration
Simplification
Profit & Loss
Trigonometry
Percentage
Ratio & Proportion
Time & Work
Average
Simple & Compound Interest
Number System
Discount
Time & Distance
Surds and Indices
Mixture & Alligation
LCM & HCF
Co-Ordinate Geometry
Pipe & Cistern
Probability
Boat & Streams
Problem on Age
Permutation & Combination
Problem on Trains