SELECT * FROM question_mgmt as q WHERE id=9540 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=6 AND chapterId=271 and ex_no='2' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th mathematics Quadratic Equations solve the problems given in example 1

Question:

Solve the problems given in Example 1.

Answer:

(i) let x and y are the no of marbles of Romil and Somi respectively.

Acc. to ques,

X + y = 45................... (1)

When they both lost their 5 marbles

(x – 5) (y – 5) = 124.................... (2)

From equation (1), we have

y = 45 – x

Put this value of x in equation (2), we get

(x – 5)(45 – x – 5) = 124

(x – 5)(40 – x) = 124

40x – x2 – 200 + 5x = 128

​x2 - 45x + 324 = 0

x2 - 36x - 9x + 324 = 0

x (x – 36) – 9 (x – 36) = 0

(x – 9) (x – 36) = 0

x = 9 or x = 36


SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='9' AND subId='6' AND ex_no!=0 AND status=1 and id!=9540 ORDER BY views desc, last_viewed_on desc limit 0,10
SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='9' AND subId='6' AND ex_no!=0 AND status=1 and id!=9540 ORDER BY last_viewed_on desc limit 0,10
Q:

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