Die
Using identity (x* a ) (x+b) = x2 + (a + b)x+ ab, find
(a) 103 x 104
(b) 5.1 x 5.2
25.
26.
SECTION -C
Let a, b, c be the three rational numbers where a= 2/4 , b = 3/5 and c=(-5/6)
Verify:
(i) a + ( b + c) = (a + b) + C (Associative property of addition).
(ii) a * (b* c) = (a*b) * c (Associative property of multiplication).
A man got 10% increase in his salary. If his new salary is Rs. 1,54,000, find his
original salary
If numerator is 2 less than denominator of a rational number and when 1 is
subtracted from numerator and denominator both, the rational number in
its simplest form is 1/2. What is the rational number?
OR
The denominator of a rational number is greater than its numerator by 8.11
the numerator is increased by 17 and the denominator is decreased by 1,
number obtained is 3/2. Find the rational number.
27.
X-1
Answers
Step-by-step explanation:
Using identity (x* a ) (x+b) = x2 + (a + b)x+ ab, find
(a) 103 x 104
(b) 5.1 x 5.2
25.
26.
SECTION -C
Let a, b, c be the three rational numbers where a= 2/4 , b = 3/5 and c=(-5/6)
Verify:
(i) a + ( b + c) = (a + b) + C (Associative property of addition).
(ii) a * (b* c) = (a*b) * c (Associative property of multiplication).
A man got 10% increase in his salary. If his new salary is Rs. 1,54,000, find his
original salary
If numerator is 2 less than denominator of a rational number and when 1 is
subtracted from numerator and denominator both, the rational number in
its simplest form is 1/2. What is the rational number?
OR
The denominator of a rational number is greater than its numerator by 8.11
the numerator is increased by 17 and the denominator is decreased by 1,
number obtained is 3/2. Find the rational number.
27.
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