Question
I. 63x2 + 148x + 77 = 0 II. 21y2
+ 89y + 88 = 0 In the following questions, two equations numbered I and II are given. You have to solve both questions and give answer among the following options.Solution
I. 63x2 + 148x + 77 = 0 63x2 + 49x + 99x + 77 = 0 7x(9x + 7) + 11(9x + 7) = 0 (7x + 11)(9x + 7)= 0 x = -11/7, -7/9 II. 21y2 + 89y + 88 = 0 21y2 + 56y + 33y + 88 = 0 7y( 3y + 8) + 11(3y + 8) = 0 (7y + 11) (3y + 8) = 0 y = -11/7 , - 8/3 So x ≥ y
If '+' means 'division', '-' means 'multiplication', '÷' means 'addition' and ' X ' means 'subtraction', then what is the value of the following expres...
What will be the value of expression if the numbers/digits ‘(20)’ and ‘(50)’ are interchanged?
20 - 32 ÷ 4 × 5 + 15 + 50
...- If ‘+’ means ‘-’, ‘×’ means ‘+’, ‘-’ means ‘÷’ and ‘÷’ means ‘×’, then what is the value of the following expression? <...
- If '+' means '-', ' X ' means '+', '-' means '÷' and '÷' means ' X ', then what is the value of the following expression?
32 ÷ 5 X 184 - 8 + 78 If ‘@’ denotes ‘addition’, ‘#’ denotes ‘subtraction’, ‘$’ denotes ‘multiplication’ and ‘%’ denotes ‘division’, then, wh...
Which of the following interchange of sign would make the given equation correct?
45 × 9 + 5 ÷ 4 = 25
If the following interchanges are made in signs, then what would be the value of the following expression?
16 ÷ 64 X 20 - 16 + 18
Interch...
What is the code for ‘it’?
If ‘+’ means ‘-’, ‘×’ means ‘+’, ‘-’ means ‘÷’ and ‘÷’ means ‘×’, then what is the value of the following expression...
If 'A' means ' X ', 'B' means '÷', 'C' means '+' and 'D' means ' - ', then what will come in the place of '?' in the given expression?
144 B ...
Relevant for Exams:
