Question 1 / 4
0 score
Answered 0/4
Correct 0
Time 01:40
Login to save your score, XP, coins and progress.
(2a-2+3ab-b-2-\(a^2-4ab+2b^2\)) को सरल करने पर क्या मिलेगा?
What is obtained after simplifying (2a-2+3ab-b-2-\(a^2-4ab+2b^2\))?
Explanation opens after your attempt
Correct Answer
B. \(a^2+7ab-3b^2\)
Step 1
Concept
Signs change in the subtracted bracket. The simplified form is \(2a^2+3ab-b^2-a^2+4ab-2b^2=a^2+7ab-3b^2\).
Step 2
Why this answer is correct
The correct answer is B. \(a^2+7ab-3b^2\). Signs change in the subtracted bracket. The simplified form is \(2a^2+3ab-b^2-a^2+4ab-2b^2=a^2+7ab-3b^2\).
Step 3
Exam Tip
घटाने वाले कोष्ठक के चिन्ह बदलेंगे। सरल रूप \(2a^2+3ab-b^2-a^2+4ab-2b^2=a^2+7ab-3b^2\) है।
Login to save your score, XP, coins and progress.
\(6x^2-3x+2\) और \(-2x^2+7x-9\) का योग क्या होगा?
What is the sum of \(6x^2-3x+2\) and \(-2x^2+7x-9\)?
Explanation opens after your attempt
Correct Answer
A. \(4x^2+4x-7\)
Step 1
Concept
Adding like terms gives \(6x^2-2x^2=4x^2\), (-3x+7x=4x), and (2-9=-7).
Step 2
Why this answer is correct
The correct answer is A. \(4x^2+4x-7\). Adding like terms gives \(6x^2-2x^2=4x^2\), (-3x+7x=4x), and (2-9=-7).
Step 3
Exam Tip
समान पद जोड़ने पर \(6x^2-2x^2=4x^2\), (-3x+7x=4x), और (2-9=-7)।
Login to save your score, XP, coins and progress.
\(9x^2-4x+1\) में से \(3x^2+2x-5\) घटाने पर क्या मिलेगा?
What is obtained by subtracting \(3x^2+2x-5\) from \(9x^2-4x+1\)?
Explanation opens after your attempt
Correct Answer
C. \(6x^2-6x+6\)
Step 1
Concept
Subtraction gives \(9x^2-4x+1-3x^2-2x+5\). Its simplified form is \(6x^2-6x+6\).
Step 2
Why this answer is correct
The correct answer is C. \(6x^2-6x+6\). Subtraction gives \(9x^2-4x+1-3x^2-2x+5\). Its simplified form is \(6x^2-6x+6\).
Step 3
Exam Tip
घटाने पर \(9x^2-4x+1-3x^2-2x+5\) मिलेगा। इसका सरल रूप \(6x^2-6x+6\) है।
Login to save your score, XP, coins and progress.
\(5a^2-2ab+3b^2\) में से \(2a^2+5ab-b^2\) घटाने पर क्या मिलेगा?
What is obtained by subtracting \(2a^2+5ab-b^2\) from \(5a^2-2ab+3b^2\)?
Explanation opens after your attempt
Correct Answer
A. \(3a^2-7ab+4b^2\)
Step 1
Concept
Subtraction gives \(5a^2-2ab+3b^2-2a^2-5ab+b^2\). The simplified form is \(3a^2-7ab+4b^2\).
Step 2
Why this answer is correct
The correct answer is A. \(3a^2-7ab+4b^2\). Subtraction gives \(5a^2-2ab+3b^2-2a^2-5ab+b^2\). The simplified form is \(3a^2-7ab+4b^2\).
Step 3
Exam Tip
घटाने पर \(5a^2-2ab+3b^2-2a^2-5ab+b^2\) मिलता है। सरल रूप \(3a^2-7ab+4b^2\) है।
Login to save your score, XP, coins and progress.
